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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549

                                    FORM 10-K
(Mark one)
[x]     Annual Report Pursuant to Section 13 or 15(d) of the Securities
        Exchange Act of 1934
               For the fiscal year ended    December 31, 1999
                                            -----------------
                                                      or
[ ]     Transition  Report  Pursuant to Section 13 or 15(d) of the  Securities
        Exchange Act of 1934
               For the transition period from ______________ to ______________

                          Commission file number 1-8246
                                                 ------

                           SOUTHWESTERN ENERGY COMPANY
               (Exact name of Registrant as specified in its charter)

                   ARKANSAS                                    71-0205415
        -------------------------------                    ------------------
        (State or other jurisdiction of                     (I.R.S. Employer
         incorporation or organization)                    Identification No.)

       1083 Sain Street, P.O.Box 1408, Fayetteville, Arkansas 72702-1408
       -----------------------------------------------------------------
          (Address of principal executive offices, including zip code)

        Registrant's telephone number, including area code (501) 521-1141
                                                           --------------

        Securities registered pursuant to Section 12(b) of the Act:

                                                        Name of each exchange
     Title of each class                                 on which registered
- -----------------------------                          -----------------------
Common Stock - Par Value $.10                          New York Stock Exchange

        Securities registered pursuant to Section 12(g) of the Act:  None

        Indicate by check mark whether the  Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
Registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. Yes X  No
                                             ---    ---

        Indicate by check mark if disclosure of  delinquent  filers  pursuant to
Item 405 of Regulation S-K is not contained  herein,  and will not be contained,
to the best of  Registrant's  knowledge,  in  definitive  proxy  or  information
statements  incorporated  by  reference  in Part  III of this  Form  10-K or any
amendment to this Form 10-K.  X
                             ---

        The aggregate market value of the voting stock held by non-affiliates of
the Registrant was $181,640,298 based on the New York Stock Exchange - Composite
Transactions closing price on March 8, 2000 of $7 3/8.

        The  number  of  shares   outstanding  as  of  March  8,  2000,  of  the
Registrant's Common Stock, par value $.10, was 25,037,773.

                       DOCUMENTS INCORPORATED BY REFERENCE

        Document  incorporated  by reference and  the Part of the Form 10-K into
which the document is incorporated: Definitive Proxy Statement to holders of the
Registrant's Common  Stock in connection with the solicitation of proxies  to be
used in voting at the Annual Meeting of Shareholders on May 24, 2000 - PART III.
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SOUTHWESTERN ENERGY COMPANY
ANNUAL REPORT on FORM 10-K
For the Year Ended December 31, 1999




TABLE OF CONTENTS

Part I                                                                                                           Page
                                                                                                                 ----
                                                                                                             
Item 1.       Business                                                                                              3
              Business Strategy                                                                                     3
              Exploration and Production                                                                            3
              Natural Gas Distribution                                                                             10
              Marketing and Transportation                                                                         13
              Other Items                                                                                          15
Item 2.       Properties                                                                                           16
Item 3.       Legal Proceedings                                                                                    18
Item 4.       Submission of Matters to a Vote of Security Holders                                                  19
              Executive Officers of the Registrant                                                                 19

Part II

Item 5.       Market for Registrant's Common Equity and Related Stockholder Matters                                21
Item 6.       Selected Financial Data                                                                              22
Item 7.       Management's Discussion and Analysis of Financial Condition and Results of Operations                24
Item 7.A.     Quantitative and Qualitative Disclosure About Market Risks                                           34
Item 8.       Financial Statements and Supplementary Data                                                          37
Item 9.       Changes in and Disagreements with Accountants on Accounting and Financial Disclosure                 60

Part III

Item 10.      Directors and Executive Officers of the Registrant                                                   60
Item 11.      Executive Compensation                                                                               61
Item 12.      Security Ownership of Certain Beneficial Owners and Management                                       61
Item 13.      Certain Relationships and Related Transactions                                                       61

Part IV

Item 14.      Exhibits, Financial Statement Schedules, and Reports on Form 8-K                                     61



                                       2



Part I

ITEM 1. BUSINESS

     Southwestern  Energy  Company  (the  "Company"  or  "Southwestern")  is  an
integrated  energy  company  primarily  focused on natural  gas. The Company was
incorporated  in Arkansas in 1929 as a local gas  distribution  company.  Today,
Southwestern  is an exempt  holding  company  under the Public  Utility  Holding
Company Act of 1935 and is involved in the following business segments:

1.   Exploration and  Production  - Engaged in natural gas and oil  exploration,
     development and  production,   with  operations   principally   located  in
     Arkansas, Oklahoma,  Texas,  New Mexico,  and  Louisiana.
2.   Natural Gas Distribution  -  Engaged  in  the gathering,  distribution  and
     transmission of  natural gas to approximately 181,000 customers in northern
     Arkansas and parts of Missouri.
3.   Marketing  and  Transportation  -  Provides  marketing  and  transportation
     services in the  Company's core areas of operation  and owns a 25% interest
     in the NOARK Pipeline System, Limited Partnership (NOARK).

     This Report on Form 10-K includes certain  statements that may be deemed to
be  "forward-looking  statements"  within  the  meaning  of  Section  27A of the
Securities Act of 1933 and Section 21E of the  Securities  Exchange Act of 1934.
See "Management's  Discussion and Analysis of Financial Condition and Results of
Operations"  in Part II, Item 7 of this Report for a discussion  of factors that
could cause actual results to differ  materially from  any  such forward-looking
statements.   For  segment  financial  information,   see  Footnote  12  to  the
consolidated financial statements in Part II, Item 8 of this Report.

Business Strategy
     The Company's  business  strategy is to provide  long-term  growth  through
focused  exploration  and  development  of oil and natural gas,  while  creating
additional value through the Company's natural gas  distribution,  marketing and
transportation  activities. The Company seeks to maximize cash flow and earnings
and provide consistent growth in oil and gas production and reserves through the
discovery,  production  and  marketing of high margin  reserves  from a balanced
portfolio of drilling  opportunities.  This balanced portfolio includes low-risk
development  drilling  in  the  Arkoma  Basin,   moderate-risk  exploration  and
exploitation in the Permian Basin, and high-potential  exploration opportunities
in the Gulf  Coast.  Additionally,  the  Company  strives to operate its utility
systems  safely and  efficiently  and to improve the  competitive  position  and
profitability of its utility systems. The Company is also committed to enhancing
shareholder value by creating and capturing additional value beyond the wellhead
through its marketing and transportation activities.

EXPLORATION AND PRODUCTION

     In 1943, the Company commenced a program of exploration for and development
of natural  gas  reserves in Arkansas  for supply to its utility  customers.  In
1971,  the Company  initiated an exploration  and  development  program  outside
Arkansas,  unrelated  to  the  utility's  requirements.  Since  that  time,  the
Company's exploration and development  activities outside Arkansas have expanded
substantially.

     During 1998,  Southwestern  brought in new senior operating  management and
replaced over 50% of its professional technical staff to refocus its exploration
and production  segment.  Additionally  in 1998, the Company closed its Oklahoma
City office and moved  these  operations  to its Houston  office in an effort to
increase future profitability.

                                       3


The segment was also  reorganized into asset management teams to provide an area
specific  focus in  exploration  and  development  projects and a new  incentive
compensation  system  was put in  place to more  closely  align  its  employees'
efforts with the interests of its shareholders.

     At December 31, 1999,  the Company had proved oil and gas reserves of 354.7
billion cubic feet (Bcf)  equivalent,  including  proved natural gas reserves of
307.5 Bcf and  proved  oil  reserves  of 7,859  thousand  barrels  (MBbls).  The
Company's reserve life index averaged nearly 11 years at year-end 1999, with 83%
of total reserves classified as proved developed.  All of the Company's reserves
are located  entirely within the United States.  Revenues of the exploration and
production  subsidiaries are predominately  generated from production of natural
gas. Sales of gas production  accounted for 87% of total operating  revenues for
this segment in 1999, 89% in 1998, and 86% in 1997.

Areas of Operation
     Southwestern  engages in gas and oil exploration and production through its
subsidiaries,  SEECO,  Inc.  (SEECO),  Southwestern  Energy  Production  Company
(SEPCO),  and  Diamond  "M"  Production  Company  (Diamond  M).  SEECO  operates
exclusively  in the state of Arkansas  and holds a large base of both  developed
and  undeveloped  gas reserves and conducts an ongoing  drilling  program in the
historically  productive  Arkansas  part of the  Arkoma  Basin.  SEPCO  conducts
development  drilling  and  exploration  programs  in  areas  outside  Arkansas,
including  the Permian  Basin of Texas and New  Mexico,  the Gulf Coast areas of
Louisiana  and Texas,  and the Anadarko  Basin of  Oklahoma.  Diamond M operates
properties in the Permian Basin of Texas.

     The following table provides information as to proved reserves, well count,
and gross and net acreage as of December 31, 1999, and annual  information as to
production  and  reserve  additions  for  1999 for  each of the  Company's  core
operating areas.




                                     Arkoma   Mid-Continent   Permian   Gulf Coast     Total
                                    --------------------------------------------------------
                                                                      
Proved Reserves:
     Gas (Bcf)                        200.0        31.7          42.6       33.2       307.5
     Oil (MBbls)                          -       2,275         4,722        862       7,859
          Total Reserves (Bcfe)       200.0        45.3          70.9       38.5       354.7

Production (Bcfe)                      20.3         4.9           5.2        2.5        32.9
Reserve Additions (Bcfe)               18.2         0.1          23.5        7.5        49.3
Total Gross Wells                       794         799           294         77       1,964
     Percent Operated                    44%         34%           43%        33%         39%
Gross Acreage                       290,363     165,649       259,238     94,466     809,716
Net Acreage                         231,642      71,071        42,790     39,155     384,658



     Arkoma Basin.  Southwestern has developed a key competitive position in the
Arkoma since it commenced  drilling in the basin in 1943.  At December 31, 1999,
the Company had  approximately  200.0 Bcf of natural gas  reserves in the Arkoma
Basin,  representing 65% of the Company's  natural gas reserves and 56% of total
reserves on a Bcf equivalent basis. The Company  participated in 37 wells during
1999 with a 70% success ratio and an average working interest of 46%. This level
of drilling  activity was somewhat lower as compared to prior years, due to cash
flow limitations.  During

                                       4


1999, the Company's  Arkoma drilling program added 18.2 Bcf of gas reserves at a
finding and development  cost of $.90 per Mcf.  Average net daily  production in
1999 was 55.7 million cubic feet equivalent  (MMcfe) and production,  or lifting
costs, in the basin during 1999 were $.22 per Mcfe (including production taxes).

     Southwestern's  traditional  operating  area over the years has been in the
"fairway"  part of the basin,  which is primarily  within the  boundaries of its
utility gathering system.  Southwestern continued its drilling activities in the
fairway in 1999,  completing  five wells out of seven drilled and adding 5.7 Bcf
of new reserves.  The largest  success in this area was the Teague #1-16 well in
Johnson County, Arkansas. This well was drilled to total depth of 4,500 feet and
was placed on production at 1.9 MMcf of gas per day.

     The Company also completed  extensive  mapping of the basin's 26 productive
horizons  covering  over  2,300  square  miles in the  fairway  that  will  help
recognize  additional  or  previously  untapped  reserve  potential.   In  2000,
Southwestern  plans to increase its activity in the fairway by drilling 22 wells
in this gas-rich area.

     Additionally,  Southwestern has continued to develop new geologic plays and
extend  previously  identified  productive  trends  outside the fairway  area. A
promising new play has been the Ranger Anticline prospect area, located near the
southern edge of the basin. To date, the Company has  successfully  drilled four
out of five wells in this  prospect,  targeting the deeper Borum sands that tend
to yield higher  production  rates and greater  reserve  potential per well. The
Company  currently  plans to drill three wells in the prospect area in 2000, but
this number could be increased with positive  drilling  results during the first
part of the year.

     The Company  successfully  developed another new prospect area during 1999,
its  Cherokee  prospect,  located in the Oklahoma  portion of the basin.  During
1999, the Company  targeted the Red Oak,  Brazil,  and Spiro sand  reservoirs in
this  under-explored  portion  of the basin and  completed  six wells out of ten
drilled.  One well in the  prospect,  the  Calvin  Terry #1 in  LeFlore  County,
Oklahoma,  was recently  placed on  production  at 5.8 MMcf per day. The Company
plans further development of this prospect with up to ten additional wells being
drilled in 2000.

     Overall,  the Company  initiated  drilling in four  promising  new prospect
areas in 1999, all located outside of the established fairway area. In 2000, the
Company  intends  to drill  over 50 wells  outside  of the  traditional  fairway
drilling area,  which includes  testing six new prospect  areas.  In total,  the
Company plans to participate  in 75 wells in the Arkoma Basin in 2000,  doubling
its 1999 activity.

     Mid-Continent.  The  Company's  activities  in this  region  are  primarily
focused on the Anadarko Basin of Oklahoma. At December 31, 1999, the Company had
approximately  31.7 Bcf of natural gas  reserves and 2,275 MBbls of oil reserves
in the region,  representing 10% and 29%,  respectively,  of the Company's total
gas and oil reserves.  Average net daily  production in 1999 for this region was
13.4 MMcfe.  During 1998,  the Company closed its Oklahoma City office and moved
these  operations  to Houston.  Southwestern  does not expect its  Mid-Continent
operations  to be a  primary  area  of  future  growth  due  to its  efforts  to
concentrate on those areas where it has a competitive advantage. During 1999 and
the first part of 2000, the Company sold  approximately 235 marginal  properties
in the Mid-Continent area with estimated remaining reserves of 4.8 Bcfe.

     Permian Basin. Through successful drilling results, a small acquisition and
several new joint ventures,  Southwestern made meaningful  strides in becoming a
more  significant  player in the Permian  Basin in 1999.  At December  31, 1999,
Southwestern  had proved  reserves  of 42.6 Bcf of gas and 4,722 MBbls of oil in
the region,  representing 14% and 60%,

                                       5


respectively,  of the Company's total gas and oil reserves. During 1999, average
net daily  production in the basin was 14.2 MMcfe and production  costs averaged
$.71 per Mcfe. This rate includes higher operating costs from secondary recovery
oil properties  acquired by the Company in 1996.  Production  costs exclusive of
these properties were $.39 per Mcfe in 1999.

     The  Company  successfully  completed  18 out of 22  wells  drilled  in the
Permian in 1999,  resulting  in a success  rate of 82%.  At  year-end,  drilling
operations at seven wells were still in progress. Southwestern's average working
interest  in the Permian  during  1999 was 24%.  Total  reserve  additions  from
drilling and  acquisitions  were 23.5 Bcfe at a finding cost of $.79 per Mcfe in
1999, while reserve  additions through drilling were 10.6 Bcfe at a finding cost
of $.86 per Mcfe.

     Southwestern  enjoyed meaningful success in its Logan Draw development area
in Eddy County,  New Mexico,  successfully  drilling 11 out of 13 wells there in
1999.  Southwestern  holds an average  28%  working  interest  in the Logan Draw
development  area, which is the combination of the Company's Top Dog, Amber, and
Freight Train  prospects.  Two notable wells in the Freight Train prospect,  the
Amtrack  State  Com #1 and the  Mule  Train  16 State  #1,  are  each  currently
producing approximately 10.0 MMcfe per day. In 2000, Southwestern plans to drill
11 wells in the Logan Draw area.

     The Company continued to successfully develop its Gaucho production unit in
Lea County,  New Mexico,  completing  three out of four wells there in 1999. The
Gaucho #3 well was  drilled  during the first  quarter of 1999 and is  currently
producing 9.1 MMcfe per day.  Additionally,  the Company successfully  confirmed
production  from  younger  Atoka sands in three  wells in the unit.  Until 1999,
hydrocarbons in the Gaucho unit had been  exclusively  produced from Morrow sand
objectives.  Southwestern  holds a 50%  working  interest in the Gaucho unit and
plans to drill two wells in the unit in 2000.

     The  Company  established  a  stronger  presence  in  the  basin  with  the
acquisition  of producing  properties  from  Petro-Quest  Exploration  effective
September 1, 1999. The transaction added 12.9 Bcfe of reserves for approximately
$9.4   million.   This   transaction   is  discussed   more  fully  below  under
"Acquisitions."

     Additionally,  the Company  established  exploration  joint ventures in the
basin with Phillips  Petroleum,  Stratex,  Inc.,  and  Petro-Quest  Exploration.
Several drilling opportunities have already been identified and planned for 2000
from these new ventures.  Overall,  Southwestern plans to participate in over 40
wells in the Permian in 2000, almost doubling its 1999 activity.

     Gulf Coast.  Southwestern  became active in the Gulf Coast in 1990 and this
area  continues  to be  the  main  focus  area  of  the  Company's  high  impact
exploration  activities.  At December 31, 1999, Southwestern had proved reserves
of 33.2 Bcf of gas and 862 MBbls of oil in the region,  representing  11 percent
of the Company's  total  reserves on a gas equivalent  basis.  Average net daily
production  in this area was 6.8 MMcfe,  compared to 13.2 MMcfe per day in 1998,
with production costs averaging $1.06 per Mcfe during 1999. The decrease in 1999
production  was due to the  loss of  production  from  certain  wells  in  south
Louisiana.

     The Company has built an extensive  inventory of 3-D seismic data  covering
over 900 miles in the Gulf Coast region of Texas and Louisiana. During 1999, the
Company  continued  to  analyze  this  seismic  data and has  generated  several
prospects  to be  drilled in 2000.  The  Company  strives  to limit its  working
interest  participation in its higher-risk Gulf Coast  exploration  prospects to
50% or less.

                                       6


     Southwestern  commenced  drilling on two prospects in its Boure 3-D seismic
project in 1999 with positive  results.  The Boure 3-D project covers 185 square
miles in Assumption  Parish,  Louisiana.  This seismic data was delivered to and
interpreted by the Company during 1999. In December 1999, the Company  announced
its  first  discovery  in the Boure 3-D  project.  The Dugas & LeBlanc  #1 well,
located on the Company's Gloria prospect, was drilled to a total depth of 14,950
feet and  encountered  three  separate sand  intervals  between  14,400 feet and
14,856 feet in the Lower  Miocene  Planulina  formation.  The well is  currently
producing 5.4 million  cubic feet of gas and 150 barrels of  condensate  per day
from the lowest  sand  interval.  Southwestern  is the  operator of the well and
holds a 50% working interest. The Company announced in February 2000 that it had
made another discovery at its North Grosbec prospect.  The Brownell-Kidd #1 well
logged  approximately 50 feet of net pay sand in the Upper Discorbis interval at
approximately  16,950 feet. The Company is currently  completing and testing the
well. Southwestern holds a 25% working interest in the well which is operated by
Petro-Hunt, L.L.C.

     In  2000,  the  Company  plans to  drill  up to two  prospects  in its East
Atchafalaya 3-D project. This project covers 113 square miles in portions of St.
Martin and Iberia Parishes, Louisiana.  Southwestern became involved in the East
Atchafalaya 3-D project in 1995 with Union Pacific Resources  Company.  To date,
the Company has participated in five wells in the project,  with two wells being
completed as  producers.  The Company  drilled one well in the East  Atchafalaya
project in 1999, the Panther prospect, which was unsuccessful.

     In late  1998,  the  Company  formed a  strategic  alliance  with  industry
partners to jointly evaluate and explore a new proprietary 3-D seismic survey in
the  Nodosaria  Embayment  area of Lafayette,  St.  Landry and Acadia  Parishes,
covering over 140 square  miles.  This seismic data was delivered to the Company
during 1999. Interpretation of the data has identified several exploration leads
and the  Company  currently  plans to test its  first  prospect  in the  survey,
Havilah, in April 2000.  Southwestern  currently has a 27.5% working interest in
the 3-D project and is the operator.

     The Company also was  successful  in  leveraging  its seismic  databank and
regional  geologic  expertise into additional  drilling  opportunities for 2000.
Overall, the Company plans to drill seven additional prospects in the Gulf Coast
area in 2000.

Acquisitions
     Effective September 1, 1999, the Company purchased producing  properties in
the Permian Basin with estimated proved reserves of 9.4 Bcf of gas and 576 MBbls
of  oil,  or  12.9  Bcfe.  The  properties   were  purchased  from   Petro-Quest
Exploration,  a privately held company headquartered in Midland, Texas, for $9.4
million.  In addition,  Southwestern  established an  exploration  joint venture
agreement   with   Petro-Quest   which  will  result  in   additional   drilling
opportunities.  The  transaction  strengthens  Southwestern's  position  in  the
Permian Basin, which continues to grow as a core operating area for the Company.

     The Company did not make any  producing  property  acquisitions  in 1998 or
1997.  In 1996,  the Company  acquired  approximately  32.7 Bcf of gas and 6,350
MBbls of oil  located in Texas and  Oklahoma  for $45.8  million.  In 1995,  the
Company  acquired  4.5 Bcf of gas and 851 MBbls of oil located in the Gulf Coast
for  $6.0  million.  The  Company's  current  strategy  is to  pursue  selective
acquisitions that would complement its existing operations.

Capital Spending
     Southwestern  began 2000 with planned capital  expenditures for gas and oil
exploration  and development of $55.4 million.  The Company's  capital budget is
balanced  between the Company's  core areas of operations and is focused more

                                       7


on drilling in 2000.  Approximately  37% of the Company's total  exploration and
development budget for 2000 is allocated to the Company's  low-risk  development
activities in the Arkoma Basin, 21% is allocated to medium-risk  exploration and
exploitation  in the  Permian  Basin,  and 24% is  allocated  to  high-potential
exploration in the Gulf Coast. Although no capital was budgeted for acquisitions
in 2000, the Company will continue to seek producing  property  transactions  in
its core producing areas that would complement its overall strategy. The Company
expects to maintain  its  capital  investments  within the limits of  internally
generated cash flow, and will adjust its capital program accordingly.

Sales and Major Customers
     Natural gas  equivalent  production  averaged 90 million cubic feet per day
(MMcfd)  in 1999,  compared  to 101 MMcfd in 1998,  and 104  MMcfd in 1997.  The
Company's gas production  was 29.4 Bcf in 1999,  down from 32.7 Bcf in 1998, and
33.4 Bcf in 1997.  The Company  also  produced  578,000  barrels of oil in 1999,
compared to 703,000  barrels in 1998, and 749,000 barrels in 1997. The decreases
in production in 1999 were the result of lower  non-operated  production  due to
the industry slowdown during late 1998 and early 1999, the decline in production
from certain  wells in the Gulf Coast area and  production  losses from marginal
properties  that were sold during the year.  The Company  expects its equivalent
production in 2000 to increase 5% to 10% over the 1999 level.

     The Company's natural gas production  received an average wellhead price of
$2.21 per thousand  cubic feet (Mcf) in 1999,  compared to $2.34 per Mcf in 1998
and $2.57 per Mcf in 1997.  Prices  received for the  Company's  oil  production
averaged  $17.11 per barrel in 1999,  compared  to $13.60 per barrel in 1998 and
$19.02 per barrel in 1997.

     Southwestern's  largest single  customer for sales of its gas production is
the  Company's  utility  subsidiary,  Arkansas  Western  Gas  Company  (Arkansas
Western). These sales are made by SEECO. Sales to Arkansas Western accounted for
approximately 31% of total  exploration and production  revenues in 1999, 38% in
1998, and 43% in 1997. All of the Company's  remaining sales are to unaffiliated
purchasers.

     SEECO's  production  was 18.9 Bcf in 1999,  down  from 19.5 Bcf in 1998 and
21.7 Bcf in 1997.  SEECO's sales to Arkansas  Western were 8.2 Bcf in 1999, down
from 11.3 Bcf in 1998 and 14.3 Bcf in 1997.  The  decreases  in  affiliated  gas
sales were  primarily  the result of warmer  weather  in the  utility's  service
territory.

     Gas volumes sold by SEECO to Arkansas  Western for its  northwest  Arkansas
division  (AWG)  were  5.1 Bcf in 1999,  7.7 Bcf in  1998,  and 8.6 Bcf in 1997.
Through these sales,  SEECO  furnished 37% of the  northwest  Arkansas  system's
requirements  in  1999,  59% in  1998,  and 64% in 1997.  SEECO  also  delivered
approximately  2.6 Bcf in 1999, 2.0 Bcf in 1998, and 1.0 Bcf in 1997 directly to
certain large business customers of AWG through a transportation  service of the
utility  subsidiary.  Most of the  sales to AWG  prior  to  December  1998  were
pursuant to a twenty-year  contract  between SEECO and AWG, entered into in July
1978,  under which the price was frozen between 1984 and 1994. This contract was
amended in 1994 as a result of a settlement  reached to resolve certain gas cost
issues  before the Arkansas  Public  Service  Commission  (APSC).  This contract
expired July 24, 1998, but continued on a month-to-month  basis through November
1998.

     In March 1997,  AWG filed a gas supply  plan with the APSC which  projected
system load growth  patterns and long range gas supply  needs for the  utility's
northwest  Arkansas  system.  The gas  supply  plan also  addressed  replacement
supplies for AWG's long-term  contract with SEECO.  After  discussions  with the
APSC it was  determined  that the  majority of the  utility's  future gas supply
needs should be provided through a competitive  bidding  process.  On October 1,
1998, AWG sent requests for proposals to various  suppliers  requesting  bids on
seven different  packages of gas supply to be

                                       8


effective  December 1, 1998. These bid requests included  replacement of the gas
supply and  no-notice  service  previously  provided by the long-term gas supply
contract between AWG and SEECO. Eleven potential suppliers returned bids in late
October.

     SEECO along with the Company's  marketing  subsidiary  successfully  bid on
five of the seven  packages  with prices  based on the Reliant East Index plus a
demand charge. The volumes of gas projected to be sold under these contracts are
approximately  equal to the  historical  annual  volumes  sold under the expired
long-term contracts,  assuming normal weather patterns.  However, the volumes to
be sold  under  these  contracts  are not fixed as they were  under the  expired
contract and will fluctuate with the weather-related  requirements of AWG. These
contracts  provide more of the gas needed during periods of colder weather,  and
less of AWG's base  system  needs.  As a result,  periods of  abnormally  warmer
weather,  such as 1999 and  1998,  result in lower  deliveries  to AWG by SEECO.
However,  charges for  no-notice  service  associated  with these  contracts are
approximately  $6.0  million per year and are  received by SEECO  regardless  of
weather  patterns.  Other sales to AWG are made under  long-term  contracts with
flexible pricing provisions.

     SEECO's sales to Associated Natural Gas Company (Associated), a division of
Arkansas Western which operates  natural gas  distribution  systems in northeast
Arkansas and parts of Missouri,  were 3.1 Bcf in 1999,  3.6 Bcf in 1998, and 5.7
Bcf in 1997. These deliveries  accounted for  approximately  47% of Associated's
total  requirements  in 1999,  50% in 1998,  and 61% in 1997.  In 1998,  certain
industrial  customers of Associated  began buying their gas supply directly from
producers or marketers.  This caused a decline in the percentage of Associated's
gas supply  provided by SEECO as these  volumes  were  previously  purchased  by
Associated  from  SEECO  and  then  delivered  to  their  industrial  customers.
Effective  October 1990, SEECO entered into a ten-year  contract with Associated
to supply a portion of its  system  requirements  at a price to be  redetermined
annually.  For the contract period  beginning  October 1, 1997, the contract was
revised to redetermine  the sales price monthly based on an index posting plus a
reservation  fee. The average  price  received  under the contract was $2.37 for
1999 and 1998 and $2.51 in 1997.  Prior to the end of the current  contract term
in  2000,  Associated  will  place  its gas  supply  out for  competitive  bids.
Continued  sales of these  volumes,  and the price of any such  sales,  could be
impacted by the results of the  competitive  bidding  process and by the pending
sale  of  the  Company's   Missouri  assets  discussed  below  in  "Natural  Gas
Distribution."

     At present,  SEECO's  contracts for sales of gas to unaffiliated  customers
consist  of  short-term  sales made to  customers  of the  utility  subsidiary's
transportation  program  and spot sales  into  markets  away from the  utility's
distribution system.  These sales are subject to seasonal price swings.  SEECO's
sales to  unaffiliated  customers are also affected by the demand of the utility
for production on its gathering system. SEECO's sales to unaffiliated purchasers
accounted for approximately 27% of total exploration and production  revenues in
1999, 19% in 1998, and 15% in 1997.

     The  combined gas  production  of SEPCO and Diamond M was 10.5 Bcf in 1999,
compared to 13.2 Bcf in 1998 and 11.7 Bcf in 1997.  Oil production was 578 MBbls
in  1999,  compared  to 703  MBbls in 1998 and 749  MBbls in 1997.  SEPCO's  and
Diamond M's gas and oil  production is sold under  contracts  with  unaffiliated
purchasers  which  reflect  current  short-term  prices and which are subject to
seasonal  price  swings.  SEPCO's  and Diamond  M's  combined  gas and oil sales
accounted for 42% of total  exploration and production  revenues in 1999 and 43%
in 1998 and 1997.

Competition
     All phases of the gas and oil industry are highly competitive. Southwestern
competes in the  acquisition of  properties,  the search  for and development of
reserves,  the  production and sale of gas and oil and the securing of the labor
and equipment required to conduct operations. Southwestern's competitors include
major  gas and oil  companies,  other

                                       9


independent gas and oil concerns and individual producers and operators. Many of
these competitors have financial and other resources that  substantially  exceed
those available to  Southwestern.  Gas and oil producers also compete with other
industries that supply energy and fuel.

     Competition in the Arkoma Basin has increased in recent years,  due largely
to the  development  of  improved  access to  interstate  pipelines.  Due to the
Company's  significant leasehold acreage position in the basin and its long-time
presence and reputation in this area,  the Company  believes it will continue to
be  successful  in  acquiring  new leases in the Arkoma  Basin.  While  improved
intrastate and interstate  pipeline  transportation in the basin should increase
the  Company's  access to markets for its gas  production,  these  markets  will
generally  be served by a number of other  suppliers.  Thus,  the  Company  will
encounter  competition  that may affect both the price it receives  and contract
terms it must offer. Outside Arkansas, the Company is less established and faces
competition from a larger number of other  producers.  The Company has in recent
years been  successful  in building  its  inventory  of  undeveloped  leases and
obtaining participating interests in drilling prospects outside Arkansas.

NATURAL GAS DISTRIBUTION

     The Company's  subsidiary  Arkansas Western Gas Company operates integrated
natural gas distribution systems concentrated primarily in northern Arkansas and
southeast  Missouri.  The Arkansas  Public  Service  Commission and the Missouri
Public  Service  Commission  (MPSC)  regulate the  Company's  utility  rates and
operations.  The Company serves  approximately  181,000  customers and obtains a
substantial  portion of the gas they consume  through its Arkoma Basin gathering
facilities.

     Arkansas  Western  consists of two  operating  divisions.  The AWG division
gathers  natural  gas in the  Arkansas  River  Valley of  western  Arkansas  and
transports  the gas  through  its own  transmission  and  distribution  systems,
ultimately  delivering  it at  retail  to  approximately  112,000  customers  in
northwest  Arkansas.  The Associated  division  receives its gas from interstate
pipelines  and delivers the gas through its own  transmission  and  distribution
systems, ultimately delivering it at retail to approximately 21,000 customers in
northeast  Arkansas and 48,000  customers in  Missouri.  Associated,  formerly a
wholly-owned  subsidiary of Arkansas Power and Light  Company,  was acquired and
merged into Arkansas Western effective June 1, 1988.

     In October 1999, the Company entered into an agreement to sell its Missouri
utility  operations  to Atmos  Energy  for $32.0  million.  The  transaction  is
currently awaiting approval by the MPSC and Federal Energy Regulatory Commission
(FERC).  Once approval is obtained and the  transaction  is closed,  the Company
will serve a total of approximately 133,000 customers in northern Arkansas.  The
transaction is expected to be closed before mid-year 2000.

Gas Purchases and Supply
     AWG purchases its system gas supply through a competitive  bidding  process
implemented in late 1998, as discussed above, and directly at the wellhead under
long-term  contracts.   SEECO  furnished   approximately  37%  of  AWG's  system
requirements  in 1999, 59% in 1998, and 64% in 1997. AWG also purchases gas from
unaffiliated  producers  under  take-or-pay  contracts.  Currently,  the Company
believes that it does not have a significant exposure to take-or-pay liabilities
resulting from these  contracts.  The Company  expects to be able to continue to
satisfactorily manage its exposure to take-or-pay liabilities.

                                       10


     Associated purchases gas for its system supply from unaffiliated  suppliers
accessed by interstate  pipelines and from affiliates.  Purchases from SEECO are
under a ten-year  contract with annual price  redeterminations.  Purchases  from
unaffiliated suppliers are under firm contracts with terms between one and three
years. The rates charged by most suppliers  include demand  components to ensure
availability of gas supply, administrative fees, and a commodity component which
is based on monthly  indexed  market  prices.  Associated's  gas  purchases  are
transported through eight pipelines.  The pipeline  transportation rates include
demand  charges to reserve  pipeline  capacity and  commodity  charges  based on
volumes  transported.  Associated  has  also  contracted  with  five  interstate
pipelines  for  storage  capacity  to meet  its  peak  seasonal  demands.  These
contracts involve demand charges based on the maximum  deliverability,  capacity
charges based on the maximum  storage  quantity,  and charges for the quantities
injected and withdrawn.

     AWG has no restriction  on adding new  residential or  commercial customers
and will supply new industrial  customers that are compatible  with the scale of
its facilities. AWG has never denied service to new customers within its service
area or experienced  curtailments  because of supply  constraints.  In addition,
Associated has never denied service to new customers  within its service area or
experienced  curtailments  because of supply  constraints  since the acquisition
date.  Curtailment of large  industrial  customers of AWG and Associated  occurs
only infrequently when extremely cold weather requires that systems be dedicated
exclusively to human needs customers.

Markets and Customers
     The utility  continues to capitalize on the healthy economies and sustained
customer  growth  found in its service  territory.  AWG and  Associated  provide
natural gas to approximately  159,000  residential,  22,000 commercial,  and 300
industrial  customers,  while also  providing  gas  transportation  services  to
approximately 50 end-use and off-system  customers.  Total gas throughput during
1999 was 36.3 Bcf,  compared to 32.8 Bcf in 1998, and 37.0 in 1997. The increase
during  1999  was  the  result  of  higher  off-system  transportation  volumes.
Off-system  transportation  volumes  were 4.8 Bcf in 1999,  compared  to 1.1 Bcf
transported in 1998, and 2.8 Bcf transported in 1997.

     Residential and Commercial. Approximately 84% of the utility's revenues are
from residential and commercial  markets.  Residential and commercial  customers
combined  accounted  for 51% of total gas  throughput  for the gas  distribution
segment  in  1999,  compared  to 57% in  1998  and  1997.  Gas  volumes  sold to
residential  customers  were 10.8 Bcf, down from 11.1 Bcf sold in 1998, and 12.6
Bcf sold in 1997. Gas sold to commercial  customers  totaled 7.6 Bcf in 1999 and
1998 and 8.4 Bcf in 1997. The decrease in  residential  gas volumes sold in 1999
was due to record warm weather.  Weather during the calendar year was 21% warmer
than normal and 8% warmer than in 1998.

     The gas heating load is one of the most significant uses of natural gas and
is sensitive to outside  temperatures.  Sales,  therefore,  vary  throughout the
year.  Profits,   however,   have  become  less  sensitive  to  fluctuations  in
temperature as tariffs  implemented in Arkansas contain a weather  normalization
clause to lessen the impact of  revenue  increases  and  decreases  which  might
result from weather variations during the winter heating season.

     Industrial and End-use Transportation.  Deliveries to industrial customers,
which are  generally  smaller  concerns  using gas for plant  heating or product
processing,  accounted for 13.1 Bcf in gas deliveries in 1999, 13.0 Bcf in 1998,
and  13.2 Bcf in 1997.  No  industrial  customer  accounts  for more  than 5% of
Arkansas Western's total throughput.

     Both AWG and Associated offer a  transportation  service that allows larger
business  customers  to  obtain  their  own gas  supplies  directly  from  other
suppliers.   A  total  of  40  customers  are   currently   using  the  Arkansas
transportation  service,  including  AWG's 15  largest  customers  in  northwest
Arkansas. Associated's four largest customers in northeast Arkansas and seven of
Associated's 11 largest  Missouri  customers are currently using  transportation
service.

                                       11


Competition
     AWG and Associated have  experienced a general trend in recent years toward
lower rates of usage among their customers,  largely as a result of conservation
efforts  that  the  Company   encourages.   Competition  is  increasingly  being
experienced  from  alternative  fuels,  primarily  electricity,  fuel  oil,  and
propane.  A  significant  amount  of fuel  switching  has not been  experienced,
though, as natural gas is generally the least expensive,  most readily available
fuel in the service territories of AWG and Associated.

     The competition from  alternative  fuels and, in a limited number of cases,
alternative sources of natural gas have intensified in recent years.  Industrial
customers are most likely to consider utilization of these alternatives, as they
are less readily available to commercial and residential customers. In an effort
to provide some pricing  alternatives  to its large  industrial  customers  with
relatively  stable loads,  AWG offers an optional  tariff to its larger business
customers and to any other large  business  customer  which shows that it has an
alternate source of fuel at a lower price or that one of its direct  competitors
has access to cheaper  sources of energy.  This  optional  tariff  enables those
customers  willing to accept the risk of price and supply  volatility  to direct
AWG to obtain a certain percentage of their gas requirements in the spot market.
Participating  customers continue to pay the non-gas cost of service included in
AWG's present tariff for large business customers and agree to reimburse AWG for
any  take-or-pay  liability  caused by spot market  purchases on the  customers'
behalf.

Regulation
     The Company's  utility rates and  operations  are regulated by the APSC and
MPSC. In Arkansas,  the Company operates through  municipal  franchises that are
perpetual by state law. These  franchises,  however,  are not exclusive within a
geographic area. In Missouri,  the Company operates through municipal franchises
with various terms of existence.

     As the regulatory focus of the natural gas industry shifts from the federal
level to the state  level,  utilities  across the nation are being  required  to
unbundle  their  sales  services  from  transportation  services in an effort to
promote  greater  competition.   Although  no  such  legislation  or  regulatory
directives related to natural gas are presently pending in Arkansas or Missouri,
the Company is aggressively  controlling  costs and constantly  reviewing issues
such as system capacity and reliability,  obligation to serve, rate design,  and
stranded or transition costs.

     In Arkansas,  the state legislature  recently passed  legislation that will
deregulate  the retail sale of  electricity  in  Arkansas  as soon as 2002.  The
Company is unable to predict the precise  impact of any such  legislation on its
utility operations. The Company's utility subsidiary has historically maintained
a substantial price advantage over electricity for most  applications.  However,
when retail electric competition is implemented in Arkansas, it is possible that
some portion of this price  advantage may be lost in some markets.  As described
in the paragraph  above, the Company is taking steps to preserve its competitive
advantage over alternative energy sources, including electricity.  When electric
deregulation occurs in Arkansas, legislative or regulatory precedents may be set
that will also affect  natural gas  utilities  in the future.  These  issues may
include further unbundling of services and the regulatory  treatment of stranded
costs.

     Gas  distribution  revenues in future years will be impacted by the sale of
the Company's  Missouri assets and by customer growth and rate increases allowed
by regulatory commissions.  In recent years, AWG has experienced customer growth
of  approximately 2% to 3% annually,  while Associated has experienced  customer
growth  of  approximately  1%  or  less  annually.  Based  on  current  economic
conditions in the Company's service territories,  the Company expects this trend
in customer growth to continue.

                                       12


     In December 1996,  AWG received  approval from the APSC for a rate increase
of $5.1 million  annually.  The December 1996 rate increase  order issued by the
APSC also provided that AWG cause to be filed with the APSC an independent study
of its  procedures  for  allocating  costs between  regulated and  non-regulated
operations,  its staffing  levels and executive  compensation.  The  independent
study was  ordered  by the APSC to  address  issues  raised by the Office of the
Attorney General of the State of Arkansas.  The study was conducted in 1999 with
a final report issued in December 1999. The report found the Company's  costs to
be reasonable in all  categories  and did not recommend any changes to the rates
currently in effect.

     The Company received  approvals in December 1997 from the APSC and the MPSC
for rate  increases  and  tariff  changes  for  Associated  which will allow the
utility to collect an  additional  $3.0  million  annually.  Of the $3.0 million
increase,  approximately  $2.0 million is in the form of base rate increases and
$1.0  million  is  related to the  increased  cost of  service of the  Company's
gathering  plant which is recovered  through either the purchased gas adjustment
clause or through  direct  charges to  transportation  customers.  Rate increase
requests  that  may be filed in the  future  will  depend  on  customer  growth,
increases in operating expenses, and additional  investments in property,  plant
and  equipment.  AWG's rates for gas  delivered to its retail  customers are not
regulated by the FERC, but its transmission  and gathering  pipeline systems are
subject to the FERC's regulations  concerning open access  transportation  since
AWG accepted a blanket transportation  certificate in connection with its merger
with Associated.

     In May  1999,  the Staff of the APSC  initiated  a  proceeding  in which it
sought  an annual  reduction  of  approximately  $2.3  million  in the rates AWG
charges its  customers  in  northwest  Arkansas.  Staff's  position was based on
various  adjustments to the utility's  rate base,  operating  expenses,  capital
structure  and rate of return.  A large  portion of the proposed  reduction  was
based on a  downward  adjustment  to the  utility's  current  return  on  equity
authorized by the APSC in 1996.  During the third  quarter of 1999,  the Company
reached agreement with the Staff and the APSC to resolve this issue and to close
several other open dockets. In the settlement  agreement,  the Company agreed to
reduce its rates  collected from customers on a prospective  basis in the amount
of $1.4  million  annually,  effective  December  1, 1999.  The  agreement  also
includes the resolution of a proceeding  initiated in December 1998 by the Staff
of the APSC where the Staff had  recommended the  disallowance of  approximately
$3.1 million of gas supply  costs.  As part of the  settlement,  this docket was
closed with no negative adjustment to the Company.

MARKETING AND TRANSPORTATION

Gas Marketing
     The marketing  group was formed in mid-1996 to better enable the Company to
capture   downstream   opportunities   which   arise   through   marketing   and
transportation  activity.  Through utilization of Southwestern's  existing asset
base, the group's focus is to create and capture value beyond the wellhead.  The
merger of the NOARK Pipeline with the Ozark Gas  Transmission  System  discussed
below is expected to afford  greater supply and market  opportunities,  allowing
the group to expand its marketing operations in Oklahoma.

     The Company's marketing  operations include the marketing of Southwestern's
own gas  production  and  third-party  natural  gas.  Operating  income for this
segment  was $2.1  million in 1999,  compared  to $1.8  million in 1998 and $1.3
million in 1997. The segment marketed 63.1 Bcf of natural gas in 1999,  compared
to 49.6  Bcf in 1998  and  36.2 Bcf in  1997.  Of the  total  volumes  marketed,
purchases from the Company's exploration and production  subsidiaries  accounted
for 31% in 1999, 25% in 1998, and 23% in 1997.

                                       13


NOARK Pipeline
     At December 31, 1999, the Company held a 25% general  partnership  interest
in NOARK. NOARK Pipeline was a 258-mile long intrastate natural gas transmission
system that originated in western Arkansas and terminated in northeast Arkansas,
crossing three major interstate pipelines and interconnecting with the Company's
distribution systems. NOARK Pipeline was completed and placed in service in 1992
and has been operating below capacity and generating  losses since it was placed
in service.  The Company's share of the pretax loss from  operations  related to
its NOARK  investment  was $2.0 million in 1999,  $3.1 million in 1998, and $4.5
million in 1997.

     In January  1998,  the Company  entered into an agreement  with Enogex Inc.
(Enogex), a subsidiary of OGE Energy Corp., to expand NOARK Pipeline and provide
access to Oklahoma gas supplies  through an  integration  of NOARK Pipeline with
the Ozark Gas  Transmission  System  (Ozark).  Ozark was a  437-mile  interstate
pipeline  system  that  began in  eastern  Oklahoma  and  terminated  in eastern
Arkansas.  On July 1, 1998, the FERC authorized the operation and integration of
Ozark and NOARK Pipeline as a single,  integrated pipeline.  The FERC order also
authorized the purchase of Ozark by a subsidiary of Enogex and the  construction
of integration  facilities.  Enogex  acquired Ozark and contributed the pipeline
system  to the  NOARK  partnership  and  also  acquired  the  NOARK  partnership
interests not held by  Southwestern.  Enogex funded the acquisition of Ozark and
the  expansion  and  integration  with  NOARK  Pipeline  which  resulted  in the
Company's interest in the partnership decreasing to 25% with Enogex owning a 75%
interest. There are also provisions in the agreement with Enogex which allow for
future revenue allocations to the Company above its 25% partnership  interest if
certain minimum throughput and revenue assumptions are not met.

     The merged  pipeline  system now has greater  access to major gas producing
fields in Oklahoma.  With access to greater  regional  production,  Southwestern
expects  the  pipeline's  additional  throughput  to create  new  marketing  and
transportation opportunities and reduce the losses experienced on the project in
the past. The merged  pipeline also provides the Company's  utility systems with
additional access to gas supply.

     The new integrated  system,  known as Ozark  Pipeline,  became  operational
November 1, 1998,  and  includes 749 miles of pipeline  with a total  throughput
capacity of 330 MMcfd.  Deliveries  are currently  being made by the  integrated
pipeline to portions of AWG's  distribution  system,  to Associated,  and to the
interstate  pipelines with which it  interconnects.  Before the integration with
Ozark,  NOARK Pipeline had an average daily throughput of 27.3 MMcfd in 1998 and
39.8 MMcfd in 1997. For 1999,  Ozark Pipeline had an average daily throughput of
167.5 MMcfd. At December 31, 1999, AWG had  transportation  contracts with Ozark
Pipeline for 82.3 MMcfd of firm  capacity.  These  contracts  expire in 2002 and
2003 and are  renewable  annually  thereafter  until terminated  with 180  days'
notice.

Competition
     The Company's gas marketing  activities  are in  competition  with numerous
other  companies  offering  the  same  services,  many of which  possess  larger
financial  and  other  resources  than  those  of  Southwestern.  Some of  these
competitors are affiliates of companies with extensive pipeline systems that are
used for  transportation  from producers to end-users.  Other factors  affecting
competition are cost and  availability of alternative  fuels,  level of consumer
demand,  and  cost  of and  proximity  of  pipelines  and  other  transportation
facilities.  The Company believes that its ability to effectively compete within
the marketing  segment in the future depends upon  establishing  and maintaining
strong relationships with producers and end-users.

     NOARK Pipeline  previously competed with two interstate  pipelines,  one of
which was the Ozark system,  to obtain gas supplies for  transportation to other
markets.  Because  of the  available  transportation  capacity  in the  Arkansas
portion

                                       14


of the Arkoma  Basin,  competition  had been  strong and had  resulted  in NOARK
Pipeline  transporting  gas for third parties at rates below the maximum tariffs
presently  allowed.  The integration with Ozark provides  increased  supplies to
transport to both local markets and markets served by the three major interstate
pipelines that Ozark Pipeline  connects with in eastern  Arkansas.  As discussed
below  under  "Regulation,"   FERC's  Order  No.  636  has  generally  increased
competition in the  transportation  segment as end-users are now acquiring their
own  supplies  and  independently  arranging  for the  transportation  of  those
supplies.  The Company  believes that Ozark Pipeline will provide the additional
supplies necessary to compete more effectively for the transportation of natural
gas to end-users and markets served by the interstate pipelines.

Regulation
     Since the mid-1980's,  the FERC has  issued a series of orders, culminating
in  Order  No.  636  in  April  1992,   that  have  altered  the  marketing  and
transportation  of natural gas.  Order No. 636 required  interstate  natural gas
pipelines to "unbundle," or segregate,  the sales,  transportation,  storage and
other  components of their existing sales services,  and to separately state the
rates for each of the  unbundled  services.  Order No. 636 and  subsequent  FERC
orders  issued in  individual  pipeline  proceedings  have been the  subject  of
appeals,  the results of which have generally been supportive of the FERC's open
access policy. Generally,  Order No. 636 has eliminated or substantially reduced
the  interstate   pipelines'  roles  as  wholesalers  of  natural  gas  and  has
substantially increased competition in natural gas markets.

     Prior to the integration  with Ozark, the operations of NOARK Pipeline were
regulated by the APSC. The APSC had established a maximum transportation rate of
approximately $.285 per dekatherm.  The integration of NOARK Pipeline with Ozark
resulted in an interstate  pipeline system subject to FERC  regulations and FERC
approved  tariffs.  The APSC no longer has  jurisdiction  over NOARK  Pipeline's
transportation  rates  and  services.  The FERC has  initially  set the  maximum
transportation rate of Ozark Pipeline at $.2455 per dekatherm.

OTHER ITEMS

Environmental Matters
     The Company's operations are subject to extensive federal,  state and local
laws  and  regulations,  including  the  Comprehensive  Environmental  Response,
Compensation  and  Liability  Act,  the Clean  Water Act,  the Clean Air Act and
similar state statutes.  These laws and regulations require permits for drilling
wells and the  maintenance of bonding  requirements in order to drill or operate
wells and also  regulate  the  spacing  and  location  of wells,  the  method of
drilling and casing wells,  the surface use and  restoration of properties  upon
which wells are drilled,  the plugging and  abandoning of wells,  the prevention
and cleanup of pollutants and other matters.  Southwestern  maintains  insurance
against costs of clean-up operations,  but is not fully insured against all such
risks.

     Compliance  with  environmental  laws and  regulations  has had no material
effect  on  Southwestern's   capital  expenditures,   earnings,  or  competitive
position.  Although future environmental  obligations are not expected to have a
material  impact on the results of  operations  or  financial  condition  of the
Company,   there  can  be  no  assurance  that  future  developments,   such  as
increasingly stringent environmental laws or enforcement thereof, will not cause
the Company to incur material environmental liabilities or costs.

Real Estate Development
     A. W. Realty Company (AWR) owns an interest in  approximately  155 acres of
real  estate,  most of which  is  undeveloped.  AWR's  real  estate  development
activities  are  concentrated  on a  130-acre  tract  of land  located  near the
Company's headquarters in a growing part of Fayetteville,  Arkansas. The Company
has owned an  interest in this land for many  years.  The  property is zoned for
commercial,  office, and multi-family residential development.  AWR continues to
review

                                       15


with a joint venture  partner  various options for developing this property that
would minimize the Company's initial capital  expenditures,  but still enable it
to retain an interest in any appreciation in value. This activity, however, does
not represent a significant portion of the Company's business.

Employees
     At  December  31,  1999,  the  Company  had 686  employees,  97 of whom are
represented under a collective bargaining  agreement.  The Company believes that
its relations with its employees are good.

ITEM 2. PROPERTIES

     For additional information about the Company's gas and oil operations refer
to Notes 5 and 6 to the financial  statements  in Item 8 ("Financial  Statements
and Supplementary Data"). For information concerning capital expenditures, refer
to page 32 ("Capital  Expenditures" section of Item 7, "Management's  Discussion
and Analysis of Financial  Condition and Results of Operations").  Also refer to
Item 6  ("Selected  Financial  Data")  for  information  concerning  gas and oil
produced.

     The following table provides  information  concerning  miles of pipe of the
Company's  gas  distribution  systems.  For a further  description  of  Arkansas
Western's properties, see discussion under Item 1 ("Business").




                                                AWG       Associated      Total
                                              ----------------------------------
                                                                 
Gathering                                        388             -          388
Transmission                                     805           608        1,413
Distribution                                   3,123         1,697        4,820
- --------------------------------------------------------------------------------
                                               4,316         2,305        6,621
================================================================================



     The following  information is provided to supplement that presented in Item
8. For a further  description of Southwestern's oil and gas properties,  see the
discussion under Item 1.

Leasehold Acreage




                                     Undeveloped                 Developed
                                  Gross         Net          Gross         Net
                                ------------------------------------------------
                                                             
Arkoma                           100,540      89,035        189,823      142,607
Mid-Continent                     61,634      27,127        104,015       43,944
Permian                          120,137      22,390        139,101       20,400
Gulf Coast                        38,240      19,385         56,226       19,770
- --------------------------------------------------------------------------------
                                 320,551     157,937        489,165      226,721
================================================================================



                                       16


Producing Wells



                                      Gas                Oil                 Total
                                 Gross     Net      Gross     Net        Gross     Net
                                 ------------------------------------------------------
                                                                
Arkoma                             794    383.4         -        -         794    383.4
Mid-Continent                      242    100.7       557    182.4         799    283.1
Permian                             75     11.1       219    132.3         294    143.4
Gulf Coast                          56     22.1        21     16.0          77     38.1
- ---------------------------------------------------------------------------------------
                                 1,167    517.3       797    330.7       1,964    848.0
=======================================================================================




Wells Drilled During the Year




                                                  Exploratory

                       Productive Wells            Dry Holes                 Total
Year                   Gross        Net        Gross        Net        Gross        Net
- ----                   ----------------------------------------------------------------
                                                                  
1999                    4.0         1.5         4.0         1.6         8.0         3.1
1998                    3.0          .5        10.0         3.9        13.0         4.4
1997                    2.0         1.3         4.0         3.0         6.0         4.3






                                                  Development

                       Productive Wells            Dry Holes                 Total
Year                   Gross        Net        Gross        Net        Gross        Net
- ----                   ----------------------------------------------------------------
                                                                 
1999                    47.0       18.3        15.0         6.1        62.0        24.4
1998                    72.0       29.4        10.0         6.4        82.0        35.8
1997                    58.0       27.5        24.0        13.5        82.0        41.0



Wells in Progress as of December 31, 1999




                                                                Gross        Net
                                                                ----------------
                                                                       
Exploratory                                                      2.0         0.6
Development                                                     10.0         2.0
- --------------------------------------------------------------------------------
Total                                                           12.0         2.6
================================================================================



     During 1999,  Southwestern  was required to file Form 23, "Annual Survey of
Domestic Oil and Gas  Reserves"  with the  Department  of Energy.  The basis for
reporting  reserves on Form 23 is not comparable to the reserve data included in
Note 6 to the financial  statements in Item 8. The primary  differences are that
Form 23 reports  gross  reserves,  including  the  royalty  owners'  share,  and
includes reserves for only those properties where the Company is the operator.

                                       17


ITEM 3. LEGAL PROCEEDINGS

     In May 1996, a class action suit was filed against the Company on behalf of
royalty owners alleging  improprieties in the disbursements of royalty proceeds.
A trial was held on the class action suit  beginning in late September 1998 that
resulted  in  a  verdict  against  the  Company  and  two  of  its  wholly-owned
subsidiaries,  SEECO,  Inc. and Arkansas  Western Gas Company,  in the amount of
$62.1 million. The trial judge subsequently awarded pre-judgment  interest in an
amount of $31.1 million, and post-judgment interest accrued from the date of the
judgment  at the rate of 10% per annum  simple  interest.  The  Company has been
required by the state  court to post a judgment  bond which now stands at $109.3
million   (verdict   amount  plus   pre-judgment   interest  and  20  months  of
post-judgment  interest) in order to stay the jury's verdict and proceed with an
appeal process.  The bond was placed by a surety company and was  collateralized
by unsecured letters of credit.

     The  verdict  was  returned  following  a trial on the  issues of the class
action lawsuit  brought by certain  royalty  owners of SEECO,  Inc., who contend
that since 1979 the defendants breached implied covenants in certain oil and gas
leases,  misrepresented  or failed to disclose  material facts to royalty owners
concerning gas purchase contracts between the Company's subsidiaries, and failed
to fulfill other  alleged  common law duties to the members of the royalty owner
plaintiff  class.  The litigation was commenced in May 1996 and was disclosed by
the Company at that time.

     The Company  believes that the jury's  verdict was wrong as a matter of law
and fact and that incorrect  rulings by the trial judge  (including  evidentiary
rulings and prejudicial jury  instructions)  provide  significant  grounds for a
successful  appeal.  The Company had asked the trial judge to recuse himself due
to his apparent bias toward the  plaintiffs and had also filed a motion with the
trial court for judgment notwithstanding the verdict or, in the alternative, for
a new  trial.  These  motions  were  denied.  The  Company  has  filed  and will
vigorously  prosecute  an  appeal  in  the  Arkansas  Supreme  Court.  Based  on
discussion  with  outside  legal  counsel,  management  of the  Company  remains
confident that the jury's verdict will be overturned and the case remanded for a
new trial. If the Company is not successful in its appeal from the jury verdict,
the Company's  financial condition and results of operations would be materially
and adversely affected. However, management believes that the Company's ultimate
liability,  if any,  resulting  from  this  case  will  not be  material  to its
financial  position,  but in any one year could be significant to the results of
operations.  At December 31, 1999 and 1998,  no amounts had been accrued on this
matter.

     In its Form 8-K filed July 2, 1996,  the Company  disclosed  that a lawsuit
relating  to  overriding  royalty  interests  in  certain  Arkansas  oil and gas
properties  had been filed against it and two of its wholly owned  subsidiaries.
The lawsuit,  which was brought by a party who was  originally  included in (but
opted out of) the class  action  litigation  described  above,  involves  claims
similar to those upon which  judgment was  rendered  against the Company and its
subsidiaries.  In  September  1998,  another  party  who  opted out of the class
threatened  the  Company  with  similar  litigation.  While the amounts of these
pending and threatened claims could be significant,  management believes,  based
on its extensive  investigations  and trial  preparation,  that these claims are
without merit and, that the Company's  ultimate  liability,  if any, will not be
material to its consolidated  financial position or results of operations.  This
matter  went to a non-jury  trial as to  liability  on January  10, 2000 and the
Company is awaiting the court's ruling.

     The United States  Minerals  Management  Service  (MMS),  a federal  agency
responsible  for  the   administration   of  federal  oil  and  gas  leases,  is
investigating  the Company and its  subsidiaries in respect of claims similar to
those in the class  action  litigation.  MMS was  included  in the class  action
litigation against its objections,  but has not pursued further action to remove
itself from the class. If MMS does remove itself from the class,  its claims may
be brought separately

                                       18


under federal statutes that provide for treble damages and civil  penalties.  In
such event,  the Company believes it would have defenses that were not available
in the class action litigation. While the aggregate amount of MMS's claims could
be  significant,  management  believes,  based on its  investigations,  that the
Company's ultimate  liability,  if any, will not be material to its consolidated
financial position or results of operations.

     As previously reported, the Company's subsidiary, SEPCO, filed suit in 1997
against several parties,  including an outside consultant previously employed by
SEPCO,  alleging  breach  of  contract,  fraud,  and  other  causes of action in
connection  with  services  performed  on SEPCO's  south  Louisiana  exploration
projects.  On June 23, 1998, the outside consultant filed a counterclaim against
SEPCO.  In 1999,  this matter was settled for an amount that was not material to
the Company's consolidated financial position or results of operation.

     The Company is subject to laws and  regulations  relating to the protection
of the environment.  The Company's policy is to accrue environmental and cleanup
related costs of a non-capital  nature when it is both probable that a liability
has been  incurred and when the amount can be reasonably  estimated.  Management
believes any future  remediation or other compliance related costs will not have
a material effect on the financial position or reported results of operations of
the Company.

     The Company is subject to other  litigation  and claims that have arisen in
the  ordinary  course of  business.  The  Company  accrues for such items when a
liability is both  probable and the amount can be reasonably  estimated.  In the
opinion of management, the results of such litigation and claims will not have a
material  effect on the results of operations  or the financial  position of the
Company.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

     No matters  were  submitted  during the fourth  quarter of the fiscal  year
ended December 31, 1999, to a vote of security holders, through the solicitation
of proxies or otherwise.

Executive Officers of the Registrant



                                                                                             Years Served
Name                                    Officer Position                              Age     as Officer
- ---------------------------------------------------------------------------------------------------------
                                                                                         
Harold M. Korell           President, Chief Executive Officer and Director             55          3

Alan H. Stevens            President and Chief Operating Officer,                      55          2
                           Southwestern Energy Production Company and SEECO, Inc.

Greg D. Kerley             Executive Vice President and Chief Financial Officer        44         10

George A. Taaffe, Jr.      Senior Vice President and General Counsel, Secretary        53          1

Debbie J. Branch           Senior Vice President, Southwestern Energy Services         48          4
                           Company

Charles V. Stevens         Senior Vice President, Arkansas Western Gas Company         50         11



                                       19


     Mr. Korell was appointed President in October 1998 and assumed the position
of Chief Executive  Officer on January 1, 1999. He joined the Company in 1997 as
Executive Vice President and Chief Operating Officer.  From 1992 to 1997, he was
employed by American  Exploration Company where he was most recently Senior Vice
President - Operations.  From 1990 to 1992, he was Executive  Vice  President of
McCormick  Resources  and from  1973 to 1989,  he held  various  positions  with
Tenneco Oil Company, including Vice President, Production.

     Mr. Alan Stevens was appointed to his present position in December 1999. He
joined the Company in January  1998 as Senior  Vice  President  of  Southwestern
Energy Production  Company and SEECO, Inc. Prior to joining the Company,  he was
President  and Chief  Operating  Officer for Petsec  Energy  during 1997 and was
employed by  Occidental  Petroleum  Company  from 1989 to 1997 where he was most
recently Vice President of Worldwide Exploration.

     Mr.  Kerley  was  appointed  to his  present  position  in  December  1999.
Previously, he served as Senior Vice President and Chief Financial Officer since
July 1998,  Senior Vice  President - Treasurer and Secretary  from 1997 to 1998,
Vice President - Treasurer and Secretary from 1992 to 1997, and Controller  from
1990 to 1992. Mr. Kerley also served as the Chief  Accounting  Officer from 1990
to 1998.

     Mr. Taaffe joined the Company in his current  position in July 1999.  Prior
to joining  the  Company,  he served as Vice  President  and  Assistant  General
Counsel for  Consolidated  Natural Gas Company from 1988 to 1999 and  Associated
General Counsel for Joy Technologies from 1973 to 1987.

     Ms.  Branch  joined the Company in her present  position in 1996.  Prior to
joining the Company, she was Executive Vice President of Stalwart Energy Company
from 1994 to 1996 and founder and President of Vesta Energy Company from 1983 to
1993.

     Mr. Charles Stevens has served  the Company  in his present  position since
December 1997. Previously, he served as  Vice President of  Arkansas Western Gas
Company from 1988 to 1997.

     All  officers  are elected at the Annual  Meeting of the Board of Directors
for one-year  terms or until their  successors  are duly  elected.  There are no
arrangements  between any officer and any other  person  pursuant to which he or
she was selected as an officer.  There is no family relationship  between any of
the named executive officers or between any of them and the Company's directors.

                                       20



Part II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

     The Company's  common stock is traded on the New York Stock  Exchange under
the symbol "SWN." At December 31, 1999,  the Company had 2,268  shareholders  of
record.  The following prices represent  closing market  transactions on the New
York Stock Exchange.




                              Range of Market Prices         Cash Dividends Paid
Quarter Ended                  1999            1998             1999      1998
- -------------             ------------------------------------------------------
                                                        
March 31                  $ 8.44  $5.31   $12.94  $10.63        $.06      $.06
June 30                   $10.56  $6.06   $12.00  $ 8.75        $.06      $.06
September 30              $10.94  $7.50   $10.38  $ 6.75        $.06      $.06
December 31               $ 9.19  $5.63   $ 8.50  $ 5.50        $.06      $.06



     The terms of  certain  of the  Company's  long-term  debt  instruments  and
agreements impose restrictions on the payment of cash dividends. These covenants
generally  limit the payment of  dividends  in a fiscal year to the total of net
income plus $20.0 million less  dividends  paid and  purchases,  redemptions  or
retirements  of  capital  stock  during  the period  since  January 1, 1990.  At
December 31, 1999, $96.4 million of retained  earnings was available for payment
as cash dividends. Dividends totaling $6.0 million were paid during 1999.

     The Company paid  dividends at an annual rate of $.24 per share in 1999 and
1998.  While the Board of  Directors  intends to continue the practice of paying
dividends quarterly, amounts and dates of such dividends as may be declared will
necessarily  be  dependent  upon  the  Company's  future  earnings  and  capital
requirements.

                                       21


ITEM 6. SELECTED FINANCIAL DATA




                                                     1999        1998        1997        1996        1995        1994
- ---------------------------------------------------------------------------------------------------------------------
                                                                                         
Financial Review (in thousands)
Operating revenues
     Exploration and production                  $ 75,039    $ 86,232    $100,129    $ 86,978    $ 63,285    $ 79,787
     Gas distribution                             132,420     134,711     154,155     142,730     119,452     126,667
     Energy services and other                    137,942      97,795      83,511      30,636      31,622      29,225
     Intersegment revenues                        (65,005)    (52,433)    (61,606)    (57,004)    (47,534)    (60,055)
- ---------------------------------------------------------------------------------------------------------------------
                                                  280,396     266,305     276,189     203,340     166,825     175,624
- ---------------------------------------------------------------------------------------------------------------------
Operating costs and expenses
     Gas purchases - utility                       45,370      39,863      46,806      42,851      37,133      36,395
     Gas purchases - marketing                     92,851      73,235      63,054      14,114      13,714       5,438
     Operating and general                         57,957      61,915      59,167      50,509      44,436      42,506
     Depreciation, depletion and amortization      41,603      46,917      48,208      42,394      35,992      35,546
     Write-down of oil and gas properties               -      66,383           -           -           -           -
     Taxes, other than income taxes                 6,557       6,943       7,018       5,476       4,362       3,657
- ---------------------------------------------------------------------------------------------------------------------
                                                  244,338     295,256     224,253     155,344     135,637     123,542
- ---------------------------------------------------------------------------------------------------------------------
Operating income                                   36,058     (28,951)     51,936      47,996      31,188      52,082
Interest expense, net                             (17,351)    (17,186)    (16,414)    (13,044)    (11,167)     (8,867)
Other income (expense)                             (2,331)     (3,956)     (5,017)     (4,015)     (1,227)     (2,362)
- ---------------------------------------------------------------------------------------------------------------------
Income before income taxes and
     extraordinary item                            16,376     (50,093)     30,505      30,937      18,794      40,853
- ---------------------------------------------------------------------------------------------------------------------
Income taxes:
     Current                                          537      (6,029)       (732)     (5,569)     (4,908)      9,288
     Deferred                                       5,912     (13,467)     12,522      17,320      12,167       6,441
- ---------------------------------------------------------------------------------------------------------------------
                                                    6,449     (19,496)     11,790      11,751       7,259      15,729
- ---------------------------------------------------------------------------------------------------------------------
Income before extraordinary item                    9,927     (30,597)     18,715      19,186      11,535      25,124
Extraordinary item                                      -           -           -           -        (295)          -
- ---------------------------------------------------------------------------------------------------------------------
Net income                                       $  9,927    $(30,597)   $ 18,715    $ 19,186    $ 11,240    $ 25,124
=====================================================================================================================
Cash flow from operations, net of working
     capital changes (in thousands)              $ 58,131    $ 93,708    $ 79,483    $ 71,830    $ 56,177    $ 66,857
Return on equity                                     5.21%        n/a        8.45%       9.23%       5.78%      12.35%
=====================================================================================================================
Common Stock Statistics
Basic earnings per share before
   extraordinary item                                $.40      $(1.23)       $.76        $.78        $.46        $.98
Basic and diluted earnings per share                 $.40      $(1.23)       $.76        $.78        $.45        $.98
Cash dividends declared and paid per share           $.24        $.24        $.24        $.24        $.24        $.24
Book value per share                                $7.60       $7.45       $8.92       $8.41       $7.87       $7.92
Market price at year-end                            $6.56       $7.50      $12.88      $15.13      $12.75      $14.88
Number of shareholders of record at
   year-end                                         2,268       2,333       2,379       2,572       2,759       2,875
Average shares outstanding                     24,941,550  24,882,170  24,738,882  24,705,256  25,130,781  25,684,110
=====================================================================================================================


                                       22



                                                     1999        1998        1997        1996        1995        1994
- ---------------------------------------------------------------------------------------------------------------------
Capitalization (in thousands)
Total debt, including current portion            $302,200    $283,436    $299,543    $278,285    $210,828    $142,300
Common shareholders' equity                       190,356     185,856     221,565     207,941     194,504     203,456
- ---------------------------------------------------------------------------------------------------------------------
Total capitalization                             $492,556    $469,292    $521,108    $486,226    $405,332    $345,756
- ---------------------------------------------------------------------------------------------------------------------
Total assets                                     $671,446    $647,620    $710,866    $660,190    $569,093    $486,074
- ---------------------------------------------------------------------------------------------------------------------
Capitalization ratios:
         Debt (excluding current portion
            of long-term)                           61.35%      60.27%      57.23%      56.96%      51.65%      40.10%
         Equity                                     38.65%      39.73%      42.77%      43.04%      48.35%      59.90%
=====================================================================================================================
Capital Expenditures (in millions)
Exploration and production                          $59.0       $52.4       $73.5      $110.3      $ 82.2       $55.4
Gas distribution                                      7.1        10.1        12.6        12.8        18.5        17.6
Other                                                  .9         1.9         2.7         1.8          .9         3.9
- ---------------------------------------------------------------------------------------------------------------------
                                                    $67.0       $64.4       $88.8      $124.9      $101.6       $76.9
=====================================================================================================================
Exploration and Production
Natural gas:
     Production, Bcf                                 29.4        32.7        33.4        34.8        34.5        37.7
     Average price per Mcf                          $2.21       $2.34       $2.57       $2.26       $1.72       $2.04
Oil:
     Production, MBbls                                578         703         749         391         229         200
     Average price per barrel                      $17.11      $13.60      $19.02      $21.21      $17.15      $15.89
Total gas and oil production, Bcfe                   32.9        36.9        37.9        37.1        35.9        38.9
Average production (lifting) cost per
   Mcf equivalent                                    $.44        $.43        $.45        $.29        $.22        $.17
Proved reserves at year-end:
     Natural gas, Bcf                               307.5       303.7       291.4       297.5       294.9       316.1
     Oil, MBbls                                     7,859       6,850       7,852       8,238       2,152       1,231
     Total reserves, Bcf equivalent                 354.7       344.8       338.5       346.9       307.8       323.5
=====================================================================================================================
Gas Distribution
Sales and transportation volumes, Bcf:
     Residential                                     10.8        11.1        12.6        13.4        12.1        11.6
     Commercial                                       7.6         7.6         8.4         8.8         7.6         7.2
     Industrial                                       3.5         4.2         6.6         7.7         7.7         7.5
     End-use transportation                           9.6         8.8         6.6         5.5         5.2         4.8
- ---------------------------------------------------------------------------------------------------------------------
                                                     31.5        31.7        34.2        35.4        32.6        31.1
     Off-system transportation                        4.8         1.1         2.8         3.6         9.8        10.7
- ---------------------------------------------------------------------------------------------------------------------
                                                     36.3        32.8        37.0        39.0        42.4        41.8
- ---------------------------------------------------------------------------------------------------------------------
Customers - year-end
     Residential                                  158,606     156,384     154,864     151,880     147,267     144,486
     Commercial                                    21,929      22,229      21,431      20,845      20,109      19,489
     Industrial                                       290         303         311         326         340         348
- ---------------------------------------------------------------------------------------------------------------------
                                                  180,825     178,916     176,606     173,051     167,716     164,323
- ---------------------------------------------------------------------------------------------------------------------
Degree days                                         3,179%      3,472%      4,131%      4,341%      4,064%      3,823%
Percent of normal                                      79          87         103         108         102          96
=====================================================================================================================


                                       23


Item 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

     The  following   information   should  be  read  in  conjunction  with  the
information contained in the financial statements and the notes thereto included
in Item 8 of this  report  and with  the  discussion  below on  "Forward-Looking
Information."  Certain  reclassifications  have been  made to the  prior  years'
financial   statements   to   conform   with   the  1999   presentation.   These
reclassifications had no effect on previously reported net income.

RESULTS OF OPERATIONS
     The Company  reported net income of $9.9  million,  or $.40 per share,  for
1999,  compared to a net loss of $30.6 million, or $1.23 per share, for 1998 and
net  income of $18.7  million,  or $.76 per  share,  in 1997.  The loss for 1998
reflects the impact of an  after-tax,  non-cash  ceiling test  write-down of the
Company's oil and gas properties of $40.5 million, or $1.63 per share. Excluding
the  non-cash  charge,  the  Company  would have  recognized  net income of $9.9
million,  or $.40 per share in 1998.  Results for 1999 reflect decreased oil and
gas production and the effects of record warm weather offset by lower  operating
and general expenses and lower depreciation, depletion and amortization expense.
During 1998 earnings were negatively  impacted by lower wellhead prices for both
oil and gas and by unseasonably warm weather.  Revenues and operating income for
the Company's major business segments are shown in the following table.




                                                   1999        1998         1997
                                               ---------------------------------
                                                        (in thousands)
                                                               
Revenues
Exploration and production                     $ 75,039    $ 86,232     $100,129
Gas distribution                                132,420     134,711      154,155
Marketing                                       137,526      97,175       82,807
Other                                               416         620          704
Eliminations                                    (65,005)    (52,433)     (61,606)
- --------------------------------------------------------------------------------
                                               $280,396    $266,305     $276,189
================================================================================

Operating Income
Exploration and production                     $ 16,451    $(47,273)(1) $ 33,303
Gas distribution                                 17,187      16,029       16,941
Marketing                                         2,142       1,800        1,315
Other                                               278         493          377
- --------------------------------------------------------------------------------
                                               $ 36,058    $(28,951)    $ 51,936
================================================================================
<FN>
(1) Includes a $66.4 million pre-tax write-down of oil and gas properties.
</FN>


Exploration and Production
     The Company's exploration and production revenues decreased 13% in 1999 and
14% in  1998.  The  decrease  in 1999 was due to  lower  volumes  of oil and gas
produced and a lower average gas price  received  while the decrease in 1998 was
due primarily to lower average oil and gas prices.

                                       24


     Operating  income  of the  exploration  and  production  segment  was $16.5
million in 1999,  compared to $19.1 million in 1998  excluding the impact of the
non-cash  write-down of oil and gas  properties,  and $33.3 million in 1997. The
decrease in 1999 was due primarily to an 11% decrease in equivalent  oil and gas
production volumes.  The decrease in 1998 was primarily due to lower average gas
and oil prices, which were down 9% and 28%,  respectively,  from their levels in
1997.

     Gas and oil production totaled 32.9 billion cubic feet equivalent (Bcfe) in
1999,  36.9 Bcfe in 1998 and 37.9 Bcfe in 1997. The decreases in production were
due to the combined  effects of  production  declines in the  Company's  outside
operated  properties  resulting  from the industry  slowdown that began in 1998,
production declines in some of the Company's Gulf Coast properties, and the loss
of production from marginal properties that were sold in 1999.




                                                            1999    1998    1997
                                                           ---------------------
                                                                  
Gas Production
Affiliated sales (Bcf)                                       8.2    11.3    14.3
Unaffiliated sales (Bcf)                                    21.2    21.4    19.1
- --------------------------------------------------------------------------------
                                                            29.4    32.7    33.4
- --------------------------------------------------------------------------------
Average price per Mcf                                      $2.21   $2.34   $2.57
================================================================================

Oil Production
Unaffiliated sales (MBbls)                                   578     703     749
- --------------------------------------------------------------------------------
Average price per Bbl                                     $17.11  $13.60  $19.02
================================================================================
Total Production (Bcfe)                                     32.9    36.9    37.9
================================================================================



     Gas sales to  unaffiliated  purchasers were 21.2 Bcf in 1999, down slightly
from  21.4 Bcf in 1998  and up from  19.1  Bcf in  1997.  Sales to  unaffiliated
purchasers are primarily made under contracts  which reflect current  short-term
prices and which are subject to seasonal price swings.

     Intersegment  sales to  Arkansas  Western Gas  Company  (AWG),  the utility
subsidiary which operates the Company's  northwest Arkansas utility system, were
5.1 Bcf in 1999, 7.7 Bcf in 1998, and 8.6 Bcf in 1997. Unseasonably warm weather
during 1999 and 1998  decreased  AWG's demand for the Company's gas supply.  The
Company's gas production  provided  approximately  40% of AWG's  requirements in
1999, and 60% in 1998 and 1997.

     Prior to December 1998,  most of the sales to AWG's system were pursuant to
an intersegment long-term contract entered into in 1978 with SEECO, Inc. (SEECO)
which was amended and restated in 1994 as the result of a settlement between the
Company,  the Staff of the Arkansas  Public  Service  Commission  (APSC) and the
office of the Attorney  General of the state of Arkansas.  The sales price under
the  amended  contract  averaged  $2.99 per  thousand  cubic feet (Mcf)  through
November of 1998, and $3.46 per Mcf in 1997.

     On October 1, 1998,  AWG sent requests for  proposals to various  suppliers
requesting  bids on seven  different  packages  of gas  supply  to be  effective
December 1, 1998. These bid requests included  replacement of the gas supply and
no-notice  service  previously  provided by the  long-term  gas supply  contract
between AWG and SEECO discussed above.

                                       25


SEECO along with the Company's marketing subsidiary  successfully bid on five of
the seven  packages  with prices  based on the Reliant  East Index plus a demand
charge.  Based on normal  weather  patterns,  the volumes of gas projected to be
sold under these contracts would be approximately equal to the historical annual
volumes  sold  under the  expired  long-term  contract.  However,  under the new
contracts,  the Company supplies most of AWG's no-notice service and less of its
routine  base  requirements  than it had under  the  previous  contract.  During
periods of warmer  weather,  as in 1999 and 1998, less total gas volumes will be
sold to AWG than  compared  to  periods of normal or colder  weather.  The total
premium  over the Reliant  East Index under these  contracts  is estimated to be
approximately  $1.0  million  lower (after tax) than the annual  premium  earned
under the expired  long-term  contract.  The majority of the premium is received
through  monthly  demand  charges  which will be received  regardless of volumes
actually  delivered.  Other sales to AWG are made under long-term contracts with
flexible pricing provisions.

     The  Company's   intersegment  sales  to  Associated  Natural  Gas  Company
(Associated),  a  division  of AWG which  operates  the  Company's  natural  gas
distribution  systems in northeast Arkansas and parts of Missouri,  were 3.1 Bcf
in  1999,  3.6 Bcf in  1998,  and  5.7 Bcf in  1997.  Deliveries  to  Associated
decreased  in 1999 and 1998 due  primarily to  corresponding  changes in heating
weather.  Effective  October 1990,  SEECO entered into a ten-year  contract with
Associated  to  supply a portion  of its  system  requirements  at a price to be
redetermined  annually.  For the contract period beginning  October 1, 1997, the
contract was revised to  redetermine  the sales price  monthly based on an index
posting plus a reservation  fee. The average price  received  under the contract
was $2.37 for 1999 and 1998 and $2.51 for 1997.  Prior to the end of the current
contract term in 2000,  Associated will place its gas supply out for competitive
bids. Continued sales of these volumes to Associated,  and the price of any such
sales,  will  depend  on  the  results  of  this  competitive  bidding  process.
Additionally,  future  volumes  could be  impacted  by the sale of  Associated's
Missouri  properties  as  discussed  further in the "Gas  Distribution"  section
below.

     The overall  average price  received for the Company's gas  production  was
$2.21  per Mcf in 1999,  $2.34 per Mcf in 1998,  and $2.57 per Mcf in 1997.  The
changes in the average  price  realized  primarily  reflects  changes in average
annual  spot  market  prices and the  effects  of the  Company's  price  hedging
activities.  The Company's hedging activities lowered the average gas price $.06
per Mcf in 1999, added $.19 per Mcf to the average gas price in 1998 and lowered
the 1997 average gas price $.05 per Mcf.

     The Company  periodically  enters into hedging activities with respect to a
portion of its projected crude oil and natural gas production  through a variety
of  financial  arrangements  intended  to support oil and gas prices at targeted
levels  and to  minimize  the  impact of price  fluctuations  (see Note 8 of the
financial statements for additional discussion). The Company's policies prohibit
speculation  with derivatives and limit swap agreements to  counterparties  with
appropriate  credit  standings.  Disregarding the impact of hedges,  the Company
expects  the  average  price it  receives  for its  total gas  production  to be
slightly  higher than average  spot market  prices due to the prices it receives
under the contracts  covering its  intersegment  sales  which are  long-term and
provide  swing  services to the Company's  utility  systems.  Future  changes in
revenues  from sales of the  Company's  gas  production  will be dependent  upon
changes in the  market  price for gas,  access to new  markets,  maintenance  of
existing markets, and additions of new gas reserves.

     The  Company  expects  future  increases  in its  gas  production  to  come
primarily  from  sales to  unaffiliated  purchasers.  The  Company  is unable to
predict  changes  in the  market  demand and price for  natural  gas,  including
changes  which  may be  induced  by the  effects  of  weather  on demand of both
affiliated   and   unaffiliated   customers   for  the   Company's

                                       26


production.  Additionally,  the  Company  holds a large  amount  of  undeveloped
leasehold acreage and producing acreage, and has an inventory of drilling leads,
prospects  and seismic data which will continue to be developed and evaluated in
the future.  The Company's  exploration  programs  have been directed  primarily
toward natural gas in recent years.

Gas Distribution
     Gas distribution  revenues  fluctuate due to the pass-through of gas supply
cost  changes and due to the effects of  weather.  Because of the  corresponding
changes in purchased gas costs,  the revenue effect of the  pass-through  of gas
cost changes has not materially  affected net income. Gas distribution  revenues
decreased  2% in 1999  and 13% in 1998 due to the  effects  of  warmer  weather.
Weather in 1999 was 21% warmer  than  normal and 8% warmer  than the prior year.
Weather in 1998 was 13% warmer than normal and 16% warmer than the prior year.

     Operating income for  Southwestern's  utility systems  increased 7% in 1999
and decreased 5% in 1998. The increase in 1999 was due to the Company's  efforts
in reducing operating costs and to customer growth. The decrease in 1998 was due
to the  effects  of warmer  weather,  partially  offset by a $3.0  million  rate
increase  approved in December  1997 for the  Company's  northeast  Arkansas and
Missouri systems, and customer growth.




                                                      1999       1998       1997
                                                   -----------------------------
                                                                
Gas Distribution Systems
Throughput (Bcf)
     Sales volumes                                    21.9       22.9       27.6
     Transportation volumes
            End-use                                    9.6        8.8        6.6
            Off-system                                 4.8        1.1        2.8
- --------------------------------------------------------------------------------
                                                      36.3       32.8       37.0
- --------------------------------------------------------------------------------
Average number of sales customers                  177,274    174,642    172,200
- --------------------------------------------------------------------------------
Heating weather
     Degree days                                     3,179      3,472      4,131
     Percent of normal                                  79%        87%       103%
Average sales rate per Mcf                           $5.67      $5.57      $5.36
================================================================================



     In 1999, AWG sold 14.5 Bcf to its customers at an average rate of $5.47 per
Mcf, compared to 15.1 Bcf at $5.37 per Mcf in 1998 and 17.4 Bcf at $5.34 per Mcf
in 1997. Additionally, AWG transported 6.2 Bcf in 1999, 6.0 Bcf in 1998, and 5.0
Bcf in 1997 for its end-use customers.  Associated sold 7.4 Bcf to its customers
in 1999 at an  average  rate of $6.06  per Mcf,  compared  to 7.8 Bcf in 1998 at
$5.95 per Mcf and 10.2 Bcf at $5.39 per Mcf in 1997. Associated  transported 3.4
Bcf for its end-use  customers in 1999,  compared to 2.8 Bcf in 1998 and 1.6 Bcf
in 1997. The decrease in the combined  volumes sold and  transported for end-use
customers  in both 1999 and 1998 for the utility  systems  resulted  from warmer
weather,  partially offset by customer  growth.  The fluctuations in the average
sales rates reflect changes in the average cost of gas purchased for delivery to
the Company's  customers,  which are passed through to customers under automatic
adjustment clauses, and rate increases implemented in 1997.

                                       27


     Total deliveries to industrial  customers of AWG and Associated,  including
transportation  volumes, were 13.1 Bcf in 1999, 13.0 Bcf in 1998 and 13.2 Bcf in
1997. AWG also  transported 4.8 Bcf of gas through its gathering  system in 1999
for off-system deliveries, all to the Ozark Gas Transmission System, compared to
1.1 Bcf in 1998 and 2.8 Bcf in 1997.  The increase in  off-system  deliveries in
1999 was due to decreased  on-system  demands of the Company's gas  distribution
systems for the  Company's  gas  production  due to warmer  than normal  heating
weather.  The  average  transportation  tariff was  approximately  $.10 per Mcf,
exclusive of fuel, in 1999, $.11 per Mcf in 1998 and $.16 per Mcf in 1997.

     In October  1999,  the Company  signed a  definitive  agreement to sell its
Missouri gas  distribution  assets for $32.0 million.  The net book value of the
assets being sold is approximately $28.0 million. Proceeds from the sale will be
used to reduce the Company's  outstanding  debt.  The sale  requires  regulatory
approval and is expected to close in the first half of 2000. After closing,  the
Company's  operating  results  for its gas  distribution  segment  will be lower
reflecting the asset  divestiture and the loss of Missouri  customers.  However,
the  Company  does not  expect the sale to have a  material  negative  impact on
earnings  as the loss in  operating  income  should  be  primarily  offset  by a
corresponding  decrease  in  interest  expense.  The  Company  currently  serves
approximately 48,000 customers in Missouri. The Company will continue to operate
its gas distribution systems in Arkansas where it currently serves approximately
133,000 customers.

     Gas  distribution  revenues in future years will be impacted by the sale of
the Company's Missouri assets, customer growth and rate increases allowed by the
APSC. In recent years, AWG has experienced  customer growth  of approximately 2%
to  3%  annually,   while   Associated  has   experienced   customer  growth  of
approximately 1% or less annually.  Based on current economic  conditions in the
Company's service territories, the Company expects this trend in customer growth
to continue.  The Company received  approvals in December 1997 from the APSC and
the Missouri  Public  Service  Commission  (MPSC) for rate  increases and tariff
changes which allow the utility to collect an additional $3.0 million  annually.
Of the $3.0  million  total,  approximately  $2.0 million is in the form of base
rate  increases and $1.0 million is related to the increased  cost of service of
the Company's  gathering  plant which is recovered  through either the purchased
gas adjustment clause or through direct charges to transportation customers.

     In its order  approving  the Missouri  changes,  the MPSC  further  ordered
Associated to modify its purchased gas adjustment  tariff to remove any specific
language   referencing  recovery  of  the  cost  of  service  of  its  gathering
facilities.  The MPSC order  provided  that  Associated  should  base  gathering
charges to its customers on competitive  market  conditions and that it would be
allowed  recovery from its sales and  transportation  customers of all prudently
incurred gathering costs without reference to its cost of service. The MPSC will
review these gathering costs annually as part of its review of Associated's  gas
costs.  Associated  believes that the MPSC lacks statutory  authority to approve
charges which are not based on historical cost of service.  Associated  appealed
this issue to the circuit  court  which ruled in favor of the MPSC.  The Company
has appealed the lower court's  decision to the Missouri  Court of Appeals.  The
Company  intends to bill its ratepayers gas gathering costs based on its cost of
service until the matter is resolved. If usage of the Company's gathering system
to obtain  system  gas  supply  or to source  gas  delivered  to its  industrial
customers should decrease, then recovery of these gathering costs would decrease
as well.  Gathering  costs have been  recovered  in this  manner  from  Missouri
customers  since  Associated's  1990  rate  case.  Prior  to the  1997  changes,
Associated's  gathering costs were recovered from Arkansas customers through its
base rates.

                                       28


     Tariffs  implemented in Arkansas as a result of rate increases in both 1996
and 1997 contain a weather  normalization clause to lessen the impact of revenue
increases and decreases  which might result from weather  variations  during the
winter heating season.  Rate increase  requests which may be filed in the future
will depend on customer growth,  increases in operating expenses, and additional
investments in property, plant and equipment. See "Regulatory Matters" below for
additional discussion related to the Company's gas distribution segment.

Marketing
     Operating income for the marketing  segment was $2.1 million on revenues of
$137.5 million in 1999, compared to $1.8 million on revenues of $97.2 million in
1998,  and $1.3  million  on  revenues  of $82.8  million in 1997.  The  Company
increased its marketing  activities when it formed a marketing group in mid-1996
to better  enable the Company to capture  downstream  opportunities  which arise
through marketing and transportation  activity. The Company marketed 63.1 Bcf in
1999, compared to 49.6 Bcf in 1998 and 36.2 Bcf in 1997. The Company enters into
hedging  activities  with  respect to its gas  marketing  activities  to provide
margin  protection  (see  Note  8 of the  financial  statements  for  additional
discussion).

NOARK Pipeline
     The marketing  segment also manages the Company's 25% interest in the NOARK
Pipeline System,  Limited Partnership (NOARK). The NOARK Pipeline was a 258-mile
long intrastate gas transmission system which extended across northern Arkansas,
crossing three major interstate pipelines and interconnecting with the Company's
distribution  systems.  The NOARK Pipeline had been operating below capacity and
generating  losses  since it was  placed  in  service  in  September  1992.  The
Company's  share of the pretax loss from  operations  included  in other  income
related to its NOARK  investment was $2.0 million in 1999, $3.1 million in 1998,
and $4.5 million in 1997. The improvement in the 1999 results primarily reflects
the benefits of the  integration of the NOARK Pipeline System with the Ozark Gas
Transmission  System.  The  integration  of the two  systems  was  completed  in
November,  1998.  The  improvement  in the 1998  pretax  loss  reflects  a lower
interest rate on NOARK's debt which resulted from a refinancing  discussed below
in "Liquidity and Capital Resources."

     In January  1998,  the Company  entered into an agreement  with Enogex Inc.
(Enogex),  a  subsidiary  of OGE Energy  Corp.,  to expand the NOARK  system and
provide access to Oklahoma gas supplies through an integration of NOARK with the
Ozark Gas Transmission System (Ozark).  Ozark was a 437-mile interstate pipeline
system  which began in eastern  Oklahoma  and  terminated  in eastern  Arkansas.
Effective  August 1, 1998,  Enogex  acquired Ozark and  contributed the pipeline
system to the NOARK  partnership.  Enogex also  acquired  the NOARK  partnership
interests not held by  Southwestern.  Enogex funded the acquisition of Ozark and
the  expansion  and  integration  with NOARK  which  resulted  in the  Company's
interest in the partnership decreasing to 25% with Enogex owning a 75% interest.
There are also  provisions in the  agreement  with Enogex which allow for future
revenue allocations to the Company above its 25% partnership interest if certain
minimum  throughput  and  revenue  assumptions  are not met.  As a result of the
changes  discussed  above, the Company believes that it will be able to continue
to reduce the losses it has  experienced  on the NOARK  project  and expects its
investment  in NOARK to be realized  over the life of the system.  See Note 7 of
the financial statements for additional discussion.

     Ozark Pipeline,  the new integrated system,  became operational November 1,
1998, and includes 749 miles of pipeline with a total throughput capacity of 330
MMcfd.  Deliveries  are  currently  being  made by the  integrated  pipeline  to
portions of AWG's  distribution  system,  to  Associated,  and to the interstate
pipelines with which it interconnects.

                                       29


In 1999 Ozark  Pipeline had an average  daily  throughput of 167.5 million cubic
feet of gas per day (MMcfd).  In 1998,  NOARK had an average daily throughput of
27.3  MMcfd  before the  integration  with  Ozark,  compared  to  average  daily
throughput  of 39.8 MMcfd in 1997.  At December  31,  1999,  the  Company's  gas
distribution  subsidiary  has  transportation  contracts with Ozark Pipeline for
82.3 MMcfd of firm  capacity.  These  contracts  expire in 2002 and 2003 and are
renewable annually thereafter until terminated with 180 days' notice.

     As further  explained in Note 11 of the financial  statements,  the Company
has severally  guaranteed 60% of NOARK's  currently  outstanding debt. This debt
financed a portion of the original cost to construct the NOARK Pipeline.

Regulatory Matters
     In May  1999,  the Staff of the APSC  initiated  a  proceeding  in which it
sought  an annual  reduction  of  approximately  $2.3  million  in the rates AWG
charges its  customers  in  northwest  Arkansas.  Staff's  position was based on
various  adjustments to the utility's  rate base,  operating  expenses,  capital
structure  and rate of return.  A large  portion of the proposed  reduction  was
based on a  downward  adjustment  to the  utility's  current  return  on  equity
authorized  by the APSC in 1996.  During the third  quarter of 1999 the  Company
reached agreement with the Staff and the APSC to resolve this issue and to close
several other dockets that had remained open. In the settlement  agreement,  the
Company  agreed to reduce its rates  collected  from  customers on a prospective
basis in the amount of $1.4 million  annually,  effective  December 1, 1999. The
agreement  also includes the  resolution  of a proceeding  initiated in December
1998 by the Staff of the APSC and that was  previously  disclosed by the Company
where the Staff had recommended the disallowance of  approximately  $3.1 million
of gas supply costs. As part of the  settlement,  this docket was closed with no
negative adjustment to the Company.

     A December 1996 rate  increase  order issued by the APSC also provided that
AWG cause to be filed with the APSC an  independent  study of its procedures for
allocating costs between  regulated and non-regulated  operations,  its staffing
levels and executive compensation. The independent study was ordered by the APSC
to address  issues raised by the Office of the Attorney  General of the State of
Arkansas. The study was conducted in 1999 with a final report issued in December
1999.  The report found the Company's  costs to be reasonable in all  categories
and did not recommend any changes to the rates currently in effect.

     The Company is subject to continuing reviews of its gas supply costs by the
APSC and the MPSC and  currently  has open  issues with the MPSC.  However,  the
Company  believes that none of these issues will have a material  adverse effect
on the Company's financial condition or results of operations.

     AWG  also  purchases  gas from  unaffiliated  producers  under  take-or-pay
contracts.  The Company believes that it does not have a significant exposure to
liabilities resulting from these contracts and expects to be able to continue to
satisfactorily manage its exposure to take-or-pay liabilities.

Operating Costs and Expenses
     The Company's  operating costs and expenses,  exclusive of gas purchases by
the Company's utility and marketing segments and the non-cash  write-down of oil
and gas properties in 1998, decreased by 8% in 1999 and increased by 1%

                                       30


in 1998.  The decrease in 1999 was  primarily  due to a 6% decrease in operating
and  general  costs  and  an  11%  decrease  in   depreciation,   depletion  and
amortization (DD&A) expense.  The comparative  decrease in operating and general
expenses was due primarily to costs recorded in 1998 for severance related costs
and other costs  associated  with the  closing of the  Company's  Oklahoma  City
exploration and production office, and to decreased oil and gas production. DD&A
expense also decreased due to the decline in production.  In 1998, a 5% increase
in  operating  and  general  expenses  due to  inflationary  increases  and  the
severance  costs  discussed  above  was  largely  offset by a  decrease  in DD&A
expense.  The  decrease in DD&A  expense  resulted  primarily  from a decline in
volumes produced and a second quarter write-down of oil and gas properties which
lowered  the  net  cost  basis  of that  segment's  depreciable  assets  and the
amortization rate per unit of production.

     The Company follows the full cost method of accounting for the exploration,
development, and acquisition of oil and gas properties. DD&A is calculated using
the units-of-production  method. The Company's annual gas and oil production, as
well as the  amount  of  proved  reserves  owned by the  Company  and the  costs
associated  with adding those reserves,  are all components of the  amortization
calculation.  The DD&A rate in 1999 averaged  $1.00 per Mcfe,  compared to $1.04
per  Mcfe in 1998 and  $1.06  per Mcfe in 1997.  The  overall  decreases  in the
Company's average  amortization rate were caused by the mid-year 1998 write-down
of the Company's oil and gas properties to the full cost ceiling limitation. The
Company  evaluates  its full cost ceiling  position at the end of each  quarter.
Market prices, production rates, levels of reserves, and the evaluation of costs
excluded  from  amortization  all  influence  the  calculation  of the full cost
ceiling.  A decline in oil and gas prices  from  year-end  1999  levels or other
factors,  without  other  mitigating  circumstances,  could cause an  additional
future  write-down of  capitalized  costs and a non-cash  charge  against future
earnings.

     Gas purchased for resale by the Company's  marketing  segment  increased to
$92.9  million in 1999,  compared to $73.2  million in 1998 and $63.1 million in
1997, due to an increase in volumes marketed. Changes in purchased gas costs for
the gas  distribution  segment  are caused by changes  in  requirements  for gas
sales,  the price and mix of gas  purchased,  and the  timing of  recoveries  of
deferred purchased gas costs.

     Inflation  impacts the Company by generally  increasing its operating costs
and the  costs  of its  capital  additions.  The  effects  of  inflation  on the
Company's  operations  in recent  years have been  minimal due to low  inflation
rates.  However,  during  late  1999 and  continuing  into  2000 the  impact  of
inflation  intensified  in  certain  areas  of  the  Company's  exploration  and
production  segment as  shortages  in drilling  rigs,  third party  services and
qualified  labor  increased.  Additionally,  delays  inherent in the rate-making
process  prevent the Company  from  obtaining  immediate  recovery of  increased
operating costs of its gas distribution segment.

Other Costs and Expenses
     Interest costs, net of  capitalization,  were up 1% in 1999 and 5% in 1998,
both as  compared  to prior  years.  The  increases  in both  1999 and 1998 were
primarily  due to  the  lower  level  of  capitalized  interest  related  to the
Company's oil and gas properties. Interest capitalized decreased 15% in 1999 and
13% in 1998. The changes in capitalized interest are due primarily to the change
in the  level  of  costs  excluded  from  amortization  in the  exploration  and
production segment.

                                       31


     The changes in other  income in 1999,  1998,  and 1997 relate  primarily to
changes  in the  Company's  share of  operating  losses  incurred  by NOARK,  as
discussed  above.  Additionally,  in 1999 and 1998 the Company  recorded certain
costs  related to a judgment  bond that the Company  was  required to post after
receiving  an  adverse  verdict in October  1998.  See Note 11 of the  financial
statements  and Part I,  Item 3,  "Legal  Proceedings,"  of this  Form  10-K for
additional information regarding the class action lawsuit.

     The previously  discussed  second quarter 1998  write-down of the Company's
oil and gas  properties  resulted in a deferred  tax  benefit of $25.9  million.
Excluding the impact of this change in deferred income taxes, the changes in the
provisions  for current and  deferred  income  taxes  recorded  each year result
primarily from the level of taxable  income,  the collection of  under-recovered
purchased gas costs,  abandoned leasehold and seismic costs and the deduction of
intangible drilling costs in the year incurred for tax purposes,  netted against
the  turnaround of intangible  drilling costs deducted for tax purposes in prior
years. Intangible drilling costs are capitalized and amortized over future years
for financial reporting purposes under the full cost method of accounting.

YEAR 2000
     The  Company  has not  experienced  any  material  negative  effects in its
results of operation or financial condition related to year 2000. The Company is
continuing  to monitor its systems and the  activities of third parties for year
2000 irregularities, however no material problems have been encountered to date.
There have been no material changes in the costs previously disclosed to address
the Company's year 2000 compliance effort.

LIQUIDITY AND CAPITAL RESOURCES
     The Company continues to depend  principally on internally  generated funds
as its major source of liquidity. However, the Company has sufficient ability to
borrow  additional  funds to meet its  short-term  seasonal  needs for cash,  to
finance a portion of its routine  spending,  if  necessary,  or to finance other
extraordinary  investment  opportunities  which might arise. In 1999,  1998, and
1997, net cash provided from operating  activities totaled $58.1 million,  $93.7
million,  and  $79.5  million,  respectively.  The  primary  components  of cash
generated  from   operations  are  net  income,   depreciation,   depletion  and
amortization,  write-down  of oil  and gas  properties  and  the  provision  for
deferred income taxes.  Net cash from operating  activities  provided 89% of the
Company's capital requirements for routine capital expenditures, cash dividends,
and scheduled debt retirements in 1999, 125% in 1998, and 79% in 1997.

Capital Expenditures
     Capital  expenditures totaled $67.0 million in 1999, $64.4 million in 1998,
and $88.8 million in 1997.  The Company's  exploration  and  production  segment
expenditures  included acquisitions of oil and gas producing properties totaling
$9.4 million in 1999.  The Company made no producing  property  acquisitions  in
1998 or 1997.




                                                      1999       1998       1997
                                                   -----------------------------
                                                          (in thousands)
                                                                
Capital Expenditures
Exploration and production                         $59,004    $52,376    $73,526
Gas distribution                                     7,124     10,108     12,561
Other                                                  839      1,875      2,734
- --------------------------------------------------------------------------------
                                                   $66,967    $64,359    $88,821
================================================================================



                                       32


     Capital  investments  planned for 2000 total $62.7  million,  consisting of
$55.4 million for exploration and production,  $6.8 million for gas distribution
system expenditures, and $.5 million for general purposes.

     The  Company  generally  intends  to adjust  its level of  routine  capital
expenditures  depending on the expected  level of internally  generated cash and
the level of debt in its capital  structure.  The Company expects that its level
of capital  investments  will be adequate  to allow the Company to maintain  its
present markets, explore and develop its existing gas and oil properties as well
as generate new drilling prospects,  and finance  improvements  necessary due to
normal customer growth in its gas distribution segment.

Financing Requirements
     At year-end 1999,  Southwestern's total debt was $302.2 million,  including
$7.5 million classified as short-term debt. This compares to year-end 1998 total
debt of $283.4 million.  Revolving credit  facilities with two banks provide the
Company access to $80.0 million of variable rate capital, including two floating
rate  facilities  that provide the Company  access to $60.0 million of long-term
capital and another  facility that provides the Company  access to $20.0 million
of  short-term  capital.  Borrowings  outstanding  under  the  long-term  credit
facilities totaled $47.7 million at the end of 1999 and $34.9 million at the end
of 1998.  Borrowings under the short-term facility were $7.5 million at December
31, 1999. There were no short-term borrowings at December 31, 1998.

     In 1997, the Company issued $60.0 million of 7.625%  Medium-Term  Notes due
2027 and $40.0 million of  Medium-Term  Notes due 2017.  These notes were issued
under a supplement to the Company's $250.0 million shelf registration  statement
filed with the  Securities  and  Exchange  Commission  in February  1997 for the
issuance of up to $125.0  million of  Medium-Term  Notes.  The Company has $25.0
million  of  capacity  remaining  under the shelf  registration  statement.  The
Company's  public  notes are  rated  BBB+ by  Standard  and  Poor's  and Baa2 by
Moody's.

     The Company  remains  confident  that it will  prevail in its appeal of the
royalty owners proceeding  described in Part I, Item 3, "Legal  Proceedings," of
this Form 10-K.  However,  the agreement under which unsecured letters of credit
have been provided to collateralize the appeal bond would require the Company to
reimburse  its lenders for the full amount  drawn under the letters of credit if
it were to lose the appeal.  Under these  circumstances the Company's ability to
borrow money would be  restricted  and existing  financing  agreements  could be
impacted through cross default provisions.

     In connection  with the Enogex  transaction in 1998  discussed  above under
"NOARK  Pipeline," the Company and a previous general partner  converted certain
of their loans to the NOARK partnership, plus accrued interest, into equity, and
contributed  approximately  $10.7  million  to the  partnership  to  fund  costs
incurred in  connection  with the  prepayment  of NOARK's  9.74% Senior  Secured
notes.  The  Company's  share of the  contribution  was $6.5  million and is the
primary  reason for the increase in  investments  during 1998. In June 1998, the
NOARK  partnership  issued  $80.0  million  of 7.15%  Notes due 2018.  The notes
require  semi-annual  principal payments of $1.0 million which began in December
1998.  The  Company  and the  other  general  partner  of NOARK  have  severally
guaranteed the principal and interest  payments on the NOARK debt. The Company's
share of the several  guarantee  is 60%.  The Company  advanced  $2.3 million to
NOARK to fund its  share of debt  service  payments  in 1999 and  advanced  $2.2
million in 1998.

     Under its existing  debt  agreements,  the Company may not issue  long-term
debt in excess  of 65% of its total  capital  and may not  issue  total  debt in
excess of 70% of its total  capital.  To issue  additional  long-term  debt, the
Company must also have, after giving effect to the debt to be issued, a ratio of
earnings  to fixed  charges  of at least  1.5 or  higher  (for any

                                       33


period of 12 consecutive  months within the preceding 24 months).  At the end of
1999, the capital structure  consisted of 61.4% debt (including  short-term debt
but excluding the Company's several guarantee of NOARK's  obligations) and 38.6%
equity,  with a ratio of earnings to fixed  charges of 1.6.  Over the long term,
the  Company  expects to lower the debt  portion  of its  capital  structure  by
limiting its routine capital spending. In 2000 the proceeds from the sale of the
Company's  Missouri  gas  distribution  assets,  as  discussed  above under "Gas
Distribution," will be used to pay down outstanding debt.

Working Capital
     The Company  maintains access to funds which may be needed to meet seasonal
requirements  through the revolving lines of credit explained above. The Company
had net working  capital of $13.9 million at the end of 1999,  compared to $17.5
million at the end of 1998.  Current assets  decreased by 3% to $70.2 million in
1999, while current liabilities  increased 3% to $56.3 million.  The decrease in
current  assets at December  31,  1999,  was due  primarily  to decreases in gas
inventory in underground  storage and prepaid expenses.  The increase in current
liabilities  resulted from an increase in short-term debt partially  offset by a
decrease in accounts payable due to the timing of payments made.

FORWARD-LOOKING INFORMATION
     All statements,  other than historical financial  information,  included in
this  discussion  and analysis of financial  condition and results of operations
may be deemed to be forward-looking statements within the meaning of Section 27A
of the  Securities  Act of 1933, as amended,  and Section 21E of the  Securities
Exchange Act of 1934, as amended. Although the Company believes the expectations
expressed  in  such   forward-looking   statements   are  based  on   reasonable
assumptions, such statements are not guarantees of future performance and actual
results or developments may differ materially from those in the  forward-looking
statements.  Important  factors  that  could  cause  actual  results  to  differ
materially from those in the forward-looking  statements herein include, but are
not limited to, the timing and extent of changes in commodity prices for gas and
oil, the timing and extent of the Company's success in discovering,  developing,
producing, and estimating reserves, the effects of weather and regulation on the
Company's gas  distribution  segment,  increased competition, legal and economic
factors, changing market conditions,  the comparative cost of alternative fuels,
conditions in capital markets and changes in interest rates, availability of oil
field  services,  drilling rigs, and other  equipment,  as well as various other
factors beyond the Company's control.

ITEM 7.A. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISKS

     Market risks  relating to the Company's  operations  result  primarily from
changes  in  commodity  prices  and  interest  rates,  as  well as  credit  risk
concentrations.  The Company uses natural gas and crude oil swap  agreements and
options to reduce the  volatility of earnings and cash flow due to  fluctuations
in the prices of natural gas and oil. The Board of Directors  has approved  risk
management  policies  and  procedures  to  utilize  financial  products  for the
reduction of defined commodity price risks. These policies prohibit  speculation
with  derivatives  and limit swap agreements to  counterparties  with acceptable
credit standings.

Credit Risks
     The Company's  financial  instruments that are exposed to concentrations of
credit risk consist  primarily of trade  receivables  and  derivative  contracts
associated with commodities trading.  Concentrations of credit risk with respect
to  receivables  are  limited  due to the large  number of  customers  and their
dispersion across geographic areas. No single customer accounts for greater than
5% of accounts  receivable.  See the discussion of credit risk  associated  with
commodities trading below.

                                       34


Interest Rate Risk
     The  following  table  provides  information  on  the  Company's  financial
instruments  that are sensitive to changes in interest rates. The table presents
the   Company's   debt   obligations,   principal   cash   flows   and   related
weighted-average  interest rates by expected  maturity dates.  Variable  average
interest  rates reflect the rates in effect at December 31, 1999 for  borrowings
under the Company's  revolving  credit  facilities.  The Company's  policy is to
manage  interest  rates through use of a combination  of fixed and floating rate
debt.  Interest rate swaps may be used to adjust  interest rate  exposures  when
appropriate. There were no interest rate swaps outstanding at December 31, 1999.




                                   Expected Maturity Date                               Fair Value
                        -----------------------------------------------------------     ----------
                        2000    2001    2002    2003    2004    Thereafter    Total      12/31/99
                        -----------------------------------------------------------     ----------
                                               ($ in millions)
                                                                  
Fixed Rate                 -    $2.0    $2.0    $2.0    $2.0      $239.0     $247.0       $234.0
Average Interest Rate      -    9.36%   9.36%   9.36%   9.36%       7.17%      7.25%

Variable Rate           $7.5   $30.0   $17.7       -       -           -      $55.2        $55.2
Average Interest Rate   6.45%   6.02%   6.45%      -       -           -       6.22%



Commodities Risk
     The Company uses over-the-counter natural gas and crude oil swap agreements
and options to hedge sales of Company  production and marketing activity against
the inherent  price risks of adverse price  fluctuations  or locational  pricing
differences  between  a  published  index and the  NYMEX  (New  York  Mercantile
Exchange)  futures  market.  These swaps include (1)  transactions  in which one
party will pay a fixed  price (or  variable  price) for a notional  quantity  in
exchange  for  receiving a variable  price (or fixed price) based on a published
index (referred to as price swaps),  and (2) transactions in which parties agree
to pay a price based on two different indices (referred to as basis swaps).

     The  primary  market  risk  related to these  derivative  contracts  is the
volatility in market prices for natural gas and crude oil. However,  this market
risk is  offset  by the gain or loss  recognized  upon the  related  sale of the
natural gas or oil that is hedged.  Credit risk relates to the risk of loss as a
result of  non-performance by the Company's  counterparties.  The counterparties
are primarily major investment and commercial  banks which  management  believes
present minimal credit risks.  The credit quality of each  counterparty  and the
level  of  financial   exposure  the  Company  has  to  each   counterparty  are
periodically reviewed to ensure limited credit risk exposure.

     The following  table  provides  information  about the Company's  financial
instruments  that are  sensitive  to  changes  in  commodity  prices.  The table
presents the  notional  amount in Bcf  (billion  cubic feet) or MBbls  (thousand
barrels),  the weighted average  contract prices,  and the total dollar contract
amount by expected  maturity  dates.  The  "Carrying  Amount"  for the  contract
amounts are  calculated as the  contractual  payments for the quantity of gas or
oil to be  exchanged  under  futures  contracts  and do  not  represent  amounts
recorded in the  Company's  financial  statements.  The

                                       35


"Fair Value"  represents  values for the same contracts using comparable  market
prices at December 31, 1999.  At December 31,  1999,  the  "Carrying  Amount" of
these financial instruments exceeded the "Fair Value" by $.4 million.




                                                              Expected Maturity Date
                                          -----------------------------------------------------------
                                                  2000                 2001                2002
                                          -----------------------------------------------------------
                                          Carrying     Fair    Carrying     Fair    Carrying     Fair
                                           Amount     Value     Amount     Value     Amount     Value
                                          -----------------------------------------------------------
                                                                               
Natural Gas
Swaps with a fixed price receipt
     Contract volume (Bcf)                   15.6                   .7                   .5
     Weighted average price per Mcf         $2.34                $2.57                $2.57
     Contract amount (in millions)          $36.6     $35.9       $1.7      $1.8       $1.2      $1.2

Swaps with a fixed price payment
     Contract volume (Bcf)                     .2                    -                    -
     Weighted  average price per Mcf        $2.68                    -                    -
     Contract  amount (in millions)           $.7       $.6          -         -          -         -

Basis swaps
     Contract volume (Bcf)                     .1                    -                    -
     Weighted average basis difference
             per Mcf                         $.11                    -                    -
     Contract amount (in millions)              -         -          -         -          -         -

Oil
Price floor
     Contract volume (MBbls)                  350(1)               325                    -
     Weighted average price per Bbl        $18.00               $18.00                    -
     Contract amount (in millions)           $6.3      $6.5       $5.9      $6.4          -         -

Swaps with a fixed price receipt
     Contract volume (MBbls)                   96                   72                    -
     Weighted average price per Bbl        $18.87               $17.49                    -
     Contract amount (in millions)           $1.8      $1.5       $1.3      $1.2          -         -

<FN>
(1) Subsequent to December 31, 1999, the Company offset its position relating to
the $18.00 per barrel  floor on a notional  amount of 320,837  barrels  covering
eleven months of 2000 production and replaced the floor with a crude oil swap to
receive a fixed price of $24.02 per barrel.
</FN>


                                       36


Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS



                                                                                                                  Page
                                                                                                                  ----
                                                                                                               
Reports of Management and Independent Public Accountants                                                          38

Consolidated Statements of Income for the years ended December 31, 1999, 1998, and 1997                           39

Consolidated Balance Sheets as of December 31, 1999 and 1998                                                      40

Consolidated Statements of Cash Flows for the years ended December 31, 1999, 1998, and 1997                       41

Consolidated Statements of Retained Earnings for the years ended December 31, 1999, 1998, and 1997                41

Notes to Consolidated Financial Statements, December 31, 1999, 1998, and 1997                                     42



                                       37


Report of Management

     Management  is  responsible  for  the  preparation  and  integrity  of  the
Company's financial  statements.  The financial statements have been prepared in
accordance with accounting  principles  generally  accepted in the United States
consistently  applied,  and  necessarily  include some amounts that are based on
management's best estimates and judgment.

     The Company  maintains a system of internal  accounting and  administrative
controls  and an ongoing  program of internal  audits that  management  believes
provide  reasonable  assurance that assets are safeguarded and that transactions
are   properly   recorded   and  executed  in   accordance   with   management's
authorization.  The  Company's  financial  statements  have been  audited by its
independent auditors, Arthur Andersen LLP. In accordance with auditing standards
generally  accepted in the United States,  the independent  auditors  obtained a
sufficient  understanding of the Company's internal controls to plan their audit
and determine the nature, timing, and extent of other tests to be performed.

     The Audit  Committee of the Board of Directors,  composed solely of outside
directors, meets with management,  internal auditors, and Arthur Andersen LLP to
review  planned audit scopes and results and to discuss other matters  affecting
internal accounting controls and financial  reporting.  The independent auditors
have direct access to the Audit Committee and periodically  meet with it without
management representatives present.

Report of Independent Public Accountants

To the Board of Directors and Shareholders of Southwestern Energy Company:

     We have audited the  consolidated  balance  sheets of  SOUTHWESTERN  ENERGY
COMPANY (an Arkansas  corporation)  AND SUBSIDIARIES as of December 31, 1999 and
1998, and the related consolidated  statements of income, retained earnings, and
cash flows for each of the three years in the period  ended  December  31, 1999.
These financial  statements are the responsibility of the Company's  management.
Our responsibility is to express an opinion on these financial  statements based
on our audits.

     We conducted our audits in accordance  with  auditing  standards  generally
accepted in the United States.  Those standards require that we plan and perform
the audit to obtain reasonable  assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.  An
audit also includes  assessing the accounting  principles  used and  significant
estimates  made by  management,  as well as  evaluating  the  overall  financial
statement  presentation.  We believe that our audits provide a reasonable  basis
for our opinion.

     In our opinion,  the financial statements referred to above present fairly,
in all material respects,  the financial position of Southwestern Energy Company
and  Subsidiaries  as of December  31,  1999 and 1998,  and the results of their
operations  and their cash flows for each of the three years in the period ended
December 31, 1999, in conformity with accounting  principles  generally accepted
in the United States.

ARTHUR ANDERSEN LLP


Tulsa, Oklahoma
February 4, 2000

                                       38


Statements of Income
Southwestern Energy Company and Subsidiaries




For the Years Ended December 31,                    1999           1998           1997
- --------------------------------------------------------------------------------------
                                               (in thousands, except per share amounts)
                                                                   
Operating Revenues
Gas sales                                       $165,898       $172,790       $190,298
Gas marketing                                     96,570         76,367         65,435
Oil sales                                          9,891          9,557         14,258
Gas transportation and other                       8,037          7,591          6,198
- --------------------------------------------------------------------------------------
                                                 280,396        266,305        276,189
- --------------------------------------------------------------------------------------
Operating Costs and Expenses
Gas purchases - utility                           45,370         39,863         46,806
Gas purchases - marketing                         92,851         73,235         63,054
Operating and general                             57,957         61,915         59,167
Depreciation, depletion and amortization          41,603         46,917         48,208
Write-down of oil and gas properties                   -         66,383              -
Taxes, other than income taxes                     6,557          6,943          7,018
- --------------------------------------------------------------------------------------
                                                 244,338        295,256        224,253
- --------------------------------------------------------------------------------------
Operating Income (Loss)                           36,058        (28,951)        51,936
- --------------------------------------------------------------------------------------
Interest Expense
Interest on long-term debt                        19,735         19,600         19,818
Other interest charges                               923          1,470          1,083
Interest capitalized                              (3,307)        (3,884)        (4,487)
- --------------------------------------------------------------------------------------
                                                  17,351         17,186         16,414
- --------------------------------------------------------------------------------------
Other Income (Expense)                            (2,331)        (3,956)        (5,017)
- --------------------------------------------------------------------------------------
Income (Loss) Before Provision (Benefit)
   for Income Taxes                               16,376        (50,093)        30,505
- --------------------------------------------------------------------------------------
Provision (Benefit) for Income Taxes
Current                                              537         (6,029)          (732)
Deferred                                           5,912        (13,467)        12,522
- --------------------------------------------------------------------------------------
                                                   6,449        (19,496)        11,790
- --------------------------------------------------------------------------------------
Net Income (Loss)                               $  9,927       $(30,597)      $ 18,715
======================================================================================

Basic Earnings (Loss) Per Share                     $.40         $(1.23)          $.76
======================================================================================
Weighted Average Common Shares Outstanding    24,941,550     24,882,170     24,738,882
======================================================================================

Diluted Earnings (Loss) Per Share                   $.40         $(1.23)          $.76
======================================================================================
Diluted Weighted Average Common Shares
   Outstanding                                24,947,021     24,882,170     24,777,906
======================================================================================



     The accompanying notes are an integral part of the financial statements

                                       39


Balance Sheets
Southwestern Energy Company and Subsidiaries




December 31,                                                  1999          1998
- --------------------------------------------------------------------------------
                                                                (in thousands)
                                                                
Assets
Current Assets
Cash                                                    $    1,240    $    1,622
Accounts receivable                                         43,339        40,655
Inventories, at average cost                                21,520        22,812
Other                                                        4,073         7,182
- --------------------------------------------------------------------------------
   Total current assets                                     70,172        72,271
- --------------------------------------------------------------------------------
Investments                                                 14,180        14,015
- --------------------------------------------------------------------------------
Property, Plant and Equipment, at cost
Gas and oil properties,  using the full cost method,
   including $37,554,000 in 1999 and $53,110,000 in
   1998 excluded from amortization                         816,199       758,863
Gas distribution systems                                   222,145       217,680
Gas in underground storage                                  28,712        24,279
Other                                                       28,826        27,643
- --------------------------------------------------------------------------------
                                                         1,095,882     1,028,465
Less: Accumulated depreciation, depletion and
   amortization                                            519,927       478,790
- --------------------------------------------------------------------------------
                                                           575,955       549,675
- --------------------------------------------------------------------------------
Other Assets                                                11,139        11,659
- --------------------------------------------------------------------------------
                                                        $  671,446    $  647,620
================================================================================

Liabilities and Shareholders' Equity
Current Liabilities
Short-term debt                                         $    7,500    $    1,536
Accounts payable                                            33,069        37,780
Taxes payable                                                3,506         3,408
Interest payable                                             2,483         2,471
Customer deposits                                            6,021         5,635
Other                                                        3,767         3,956
- --------------------------------------------------------------------------------
   Total current liabilities                                56,346        54,786
- --------------------------------------------------------------------------------
Long-Term Debt, less current portion                       294,700       281,900
- --------------------------------------------------------------------------------
Other Liabilities
Deferred income taxes                                      126,902       121,413
Other                                                        3,142         3,665
- --------------------------------------------------------------------------------
                                                           130,044       125,078
- --------------------------------------------------------------------------------
Commitments and Contingencies
- --------------------------------------------------------------------------------
Shareholders' Equity
Common stock, $.10 par value; authorized
   75,000,000 shares, issued 27,738,084 shares               2,774         2,774
Additional paid-in capital                                  20,732        21,249
Retained earnings, per accompanying statements             198,044       194,102
- --------------------------------------------------------------------------------
                                                           221,550       218,125
Less: Common stock in treasury, at cost, 2,700,391
         shares in 1999 and 2,803,527 shares in 1998        30,083        31,248
      Unamortized cost of restricted shares issued
         under stock incentive plan, 188,781 shares
         in 1999 and 133,172 shares in 1998                  1,111         1,021
- --------------------------------------------------------------------------------
                                                           190,356       185,856
- --------------------------------------------------------------------------------
                                                        $  671,446    $  647,620
================================================================================



    The accompanying notes are an integral part of the financial statements.

                                       40


Statements of Cash Flows
Southwestern Energy Company and Subsidiaries




For the Years Ended December 31,                            1999        1998        1997
- ----------------------------------------------------------------------------------------
                                                                   (in thousands)
                                                                       
Cash Flows From Operating Activities
Net income (loss)                                       $  9,927    $(30,597)   $ 18,715
Adjustments to reconcile net income (loss) to
   net cash provided by operating activities:
       Depreciation, depletion and amortization           42,971      48,267      49,271
       Write-down of oil and gas  properties                   -      66,383           -
       Deferred  income taxes                              5,912     (13,467)     12,522
       Equity in loss of partnership                       2,008       3,087       4,523
       Change in assets and liabilities:
           (Increase) decrease in accounts receivable     (2,684)      5,097      (5,824)
           Decrease in income taxes receivable             1,658       1,066       3,549
           (Increase) decrease in under-recovered
               purchased gas costs                          (273)     10,931      (6,398)
           (Increase) decrease in inventories              1,292      (2,347)     (2,894)
           Increase (decrease) in accounts payable        (4,711)      7,877       4,259
           Net change in other current assets and
               liabilities                                 2,031      (2,589)      1,760
- ----------------------------------------------------------------------------------------
Net cash provided by operating activities                 58,131      93,708      79,483
- ----------------------------------------------------------------------------------------
Cash Flows From Investing Activities
Capital expenditures                                     (66,967)    (64,359)    (88,821)
Investment in partnership                                 (2,273)    (10,062)     (4,962)
(Increase) decrease in gas stored underground             (4,433)       (531)      1,888
Other items                                                2,380         340       1,048
- ----------------------------------------------------------------------------------------
Net cash used in investing activities                    (71,293)    (74,612)    (90,847)
- ----------------------------------------------------------------------------------------
Cash Flows From Financing Activities
Net increase (decrease) in revolving long-term debt       12,800     (11,500)    (50,100)
Proceeds  from  revolving  short-term  debt                7,500           -           -
Proceeds  from issuance of long-term  debt                     -           -      98,348
Payments on other  long-term  debt                        (1,535)     (4,607)    (28,643)
Dividends paid                                            (5,985)     (5,970)     (5,935)
- ----------------------------------------------------------------------------------------
Net cash provided (used) by financing activities          12,780     (22,077)     13,670
- ----------------------------------------------------------------------------------------
Increase (decrease) in cash                                 (382)     (2,981)      2,306
Cash at beginning of year                                  1,622       4,603       2,297
- ----------------------------------------------------------------------------------------
Cash at end of year                                     $  1,240    $  1,622    $  4,603
========================================================================================



Statements of Retained Earnings
Southwestern Energy Company and Subsidiaries




For the Years Ended December 31,                            1999        1998        1997
- ----------------------------------------------------------------------------------------
                                                                   (in thousands)
                                                                       
Retained Earnings, beginning of year                    $194,102    $230,669    $217,889
Net income (loss)                                          9,927     (30,597)     18,715
Cash dividends declared ($.24 per share)                  (5,985)     (5,970)     (5,935)
- ----------------------------------------------------------------------------------------
Retained Earnings, end of year                          $198,044    $194,102    $230,669
========================================================================================



    The accompanying notes are an integral part of the financial statements.

                                       41



Notes to Financial Statements
Southwestern Energy Company and Subsidiaries
December 31, 1999, 1998, and 1997

(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations and Consolidation
     Southwestern Energy Company  (Southwestern or the Company) is an integrated
energy  company  primarily  focused on natural  gas.  Through  its  wholly-owned
subsidiaries,  the Company is engaged in oil and gas exploration and production,
natural gas gathering, transmission and marketing, and natural gas distribution.
Southwestern's   exploration  and  production  activities  are  concentrated  in
Arkansas, New Mexico, Texas, Oklahoma,  Louisiana, and the Gulf Coast (primarily
onshore).  The gas distribution  segment operates in northern Arkansas and parts
of Missouri,  and under normal weather conditions  obtains  approximately 50% of
its  gas  supply  from  one  of  the  Company's   exploration   and   production
subsidiaries.   The  customers  of  the  gas  distribution  segment  consist  of
residential,  commercial,  and industrial  users of natural gas.  Southwestern's
marketing  and  transportation  business  is  concentrated  in its core areas of
operations.

     In late 1999, the Company  entered into a definitive  agreement to sell its
Missouri gas distribution assets for $32.0 million. The Company's basis in these
assets is approximately $28.0 million. The sale requires regulatory approval and
is expected to close in the first half of 2000.  The  Company  currently  serves
approximately  48,000  customers  in  Missouri.  Proceeds  from  the sale of the
Missouri  assets  will be used to reduce the  Company's  outstanding  debt.  The
Company  does  not  expect  a  material  impact  on its  continuing  results  of
operations  due to this sale as interest  savings from the reduction in debt are
expected to generally offset the reduction in net income.

     The consolidated  financial statements include the accounts of Southwestern
Energy Company and its wholly-owned subsidiaries, Southwestern Energy Production
Company, SEECO, Inc., Arkansas Western Gas Company, Southwestern Energy Services
Company,  Diamond "M" Production Company,  Southwestern Energy Pipeline Company,
A.W. Realty Company,  and Arkansas  Western  Pipeline  Company.  All significant
intercompany  accounts  and  transactions  have  been  eliminated.  The  Company
accounts  for its general  partnership  interest in the NOARK  Pipeline  System,
Limited Partnership (NOARK) using the equity method of accounting. In accordance
with Statement of Financial  Accounting Standards (SFAS) No. 71, "Accounting for
the Effects of Certain Types of Regulation,"  the Company  recognizes  profit on
intercompany  sales of gas  delivered  to  storage  by its  utility  subsidiary.
Certain   reclassifications  have  been  made  to  the  prior  years'  financial
statements to conform with the 1999 presentation. These reclassifications had no
effect on previously recorded net income.

     The  preparation  of financial  statements  in conformity  with  accounting
principles  generally accepted in the United States requires  management to make
estimates  and  assumptions  that  affect  the  reported  amounts  of assets and
liabilities and disclosure of contingent assets and liabilities,  if any, at the
date of the  financial  statements,  and the  reported  amounts of revenues  and
expenses  during the reporting  period.  Actual  results could differ from those
estimates.

                                       42


Property, Depreciation, Depletion and Amortization
     Gas and Oil  Properties  - The  Company  follows  the full  cost  method of
accounting  for the  exploration,  development,  and  acquisition of gas and oil
reserves.  Under this  method,  all such costs  (productive  and  nonproductive)
including salaries,  benefits, and other internal costs directly attributable to
these  activities are  capitalized  and amortized on an aggregate basis over the
estimated  lives of the properties  using the  units-of-production  method.  The
Company   excludes  all  costs  of   unevaluated   properties   from   immediate
amortization.  The Company's  unamortized  costs of oil and gas  properties  are
limited to the sum of the future net revenues attributable to proved oil and gas
reserves  discounted at 10 percent plus the lower of cost or market value of any
unproved  properties.  If  the  Company's  unamortized  costs  in  oil  and  gas
properties exceed this ceiling amount, a provision for additional  depreciation,
depletion and amortization is required. At June 30, 1998, the Company recognized
a $40.5 million non-cash charge to earnings by recording a write-down of its oil
and gas properties of $66.4 million and a related reduction in the provision for
deferred  income taxes of $25.9 million.  At December 31, 1999,  1998, and 1997,
the  Company's  net book  value of oil and gas  properties  did not  exceed  the
ceiling amounts.  Market prices,  production rates, levels of reserves,  and the
evaluation of costs excluded from  amortization all influence the calculation of
the full cost ceiling. A decline in oil and gas prices from year-end 1999 levels
or  other  factors,  without  other  mitigating  circumstances,  could  cause an
additional  future  write-down  of  capitalized  costs and a  noncash  charge to
earnings.

     Gas  Distribution  Systems - Costs  applicable to construction  activities,
including overhead items, are capitalized.  Depreciation and amortization of the
gas distribution system is provided using the straight-line  method with average
annual rates for plant  functions  ranging from 1.8% to 6.0%. Gas in underground
storage is stated at average cost.

     Other property,  plant and equipment is depreciated using the straight-line
method over estimated useful lives ranging from 5 to 40 years.

     The  Company  charges  to  maintenance  or  operations  the cost of  labor,
materials,  and other expenses incurred in maintaining the operating  efficiency
of  its  properties.  Betterments  are  added  to  property  accounts  at  cost.
Retirements are credited to property, plant and equipment at cost and charged to
accumulated  depreciation,  depletion  and  amortization  with  no  gain or loss
recognized, except for abnormal retirements.

     Capitalized  Interest - Interest is  capitalized on the cost of unevaluated
gas  and  oil  properties   excluded  from  amortization.   In  accordance  with
established  utility  regulatory  practice,  an allowance  for funds used during
construction  of major projects is capitalized  and amortized over the estimated
lives of the related facilities.

Gas Distribution Revenues and Receivables
     Customer  receivables  arise from the sale or  transportation of gas by the
Company's gas distribution subsidiary.  The Company's gas distribution customers
represent a diversified base of residential,  commercial,  and industrial users.
Approximately  112,000 of these  customers are served in northwest  Arkansas and
approximately 69,000 are served in northeast Arkansas and Missouri.  The Company
records gas distribution  revenues on an accrual basis, as gas volumes are used,
to provide a proper matching of revenues with expenses.

                                       43


     The gas  distribution  subsidiary's  rate schedules  include  purchased gas
adjustment  clauses  whereby the actual cost of purchased gas above or below the
level  included in the base rates is permitted to be billed or is required to be
credited to  customers.  Each month,  the  difference  between  actual  costs of
purchased gas and gas costs  recovered from customers is deferred.  The deferred
differences are billed or credited,  as appropriate,  to customers in subsequent
months.  Rate  schedules for the Company's  Arkansas  systems  include a weather
normalization  clause to lessen the impact of revenue  increases  and  decreases
which might result from weather variations during the winter heating season. The
pass-through  of gas costs to customers  is not  affected by this  normalization
clause.

Gas Production Imbalances
     The  exploration  and  production  subsidiaries  record gas sales using the
entitlement  method. The entitlement method requires revenue  recognition of the
Company's  revenue interest share of gas production from properties in which gas
sales are  disproportionately  allocated to owners because of marketing or other
contractual  arrangements.  The Company's net imbalance position at December 31,
1999 and 1998 was not significant.

Income Taxes
     Deferred  income taxes are  provided to recognize  the income tax effect of
reporting  certain  transactions in different years for income tax and financial
reporting purposes.

Risk Management
     The Company has limited involvement with derivative  financial  instruments
and does not use them for  trading  purposes.  They are used to  manage  defined
commodity price risks. The Company uses commodity swap agreements and options to
hedge  sales of natural  gas and crude  oil.  Gains and  losses  resulting  from
hedging  activities are recognized when the related  physical  transactions  are
recognized.  Gains or losses from commodity swap  agreements and options that do
not qualify for accounting treatment as hedges are recognized currently as other
income  or  expense.  See Note 8 for a  discussion  of the  Company's  commodity
hedging activity.

Earnings Per Share and Shareholders' Equity
     Basic  earnings  per common share is computed by dividing net income by the
weighted  average  number of common  shares  outstanding  during each year.  The
diluted  earnings per share  calculation  adds to the weighted average number of
common  shares   outstanding  the  incremental   shares  that  would  have  been
outstanding  assuming the exercise of dilutive  stock  options.  The Company had
options for 1,275,899  shares of common stock with a weighted  average  exercise
price of $12.97 per share at December 31, 1999,  and options for 951,047  shares
with an average  exercise  price of $14.61 at December 31,  1997,  that were not
included in the  calculation  of diluted  shares  because they would have had an
anti-dilutive  effect.  There were options for 1,634,901  shares with a weighted
average  exercise  price of $12.15  outstanding at December 31, 1998. Due to the
Company's net loss for 1998 any incremental  shares would have an  anti-dilutive
effect and were, therefore, not considered.

     During 1999 and 1998,  the  Company  issued  105,436  and 105,488  treasury
shares,  respectively,  under a  compensatory  plan  and for  stock  awards  and
returned to treasury 2,300 and 4,496 shares, respectively, canceled from earlier
issues under the compensatory  plan. The net effect of these  transactions was a
$1.2 million  decrease in 1999 and a $1.1  million  decrease in 1998 in treasury
stock.

                                       44


(2) DEBT

     Debt balances as of December 31, 1999 and 1998 consisted of the following:




                                                                1999        1998
                                                            --------------------
                                                                 (in thousands)
                                                                  
Senior Notes
8.86% Series                                                $      -    $  1,536
9.36% Series due in annual installments of $2.0
   million beginning 2001                                     22,000      22,000
6.70% Series due 2005                                        125,000     125,000
7.625% Series due 2027, putable at the holders'
   option in 2009                                             60,000      60,000
7.21% Series due 2017                                         40,000      40,000
- --------------------------------------------------------------------------------
                                                             247,000     248,536
Other
Variable rate (6.18% at December 31, 1999) unsecured
   revolving credit arrangements                              47,700      34,900
- --------------------------------------------------------------------------------
Total long-term debt                                         294,700     283,436
Less: Current portion of long-term debt                            -       1,536
- --------------------------------------------------------------------------------
Long-term debt                                              $294,700    $281,900
================================================================================

Short-term note payable                                     $  7,500    $      -
================================================================================



     The Company has several  prepayment  options  under the terms of certain of
its Senior  Notes.  Prepayments  made  without  premium  are  subject to certain
limitations.  Other prepayment  options involve the payment of premiums based in
some instances on market interest rates at the time of prepayment.

     Revolving  credit  facilities  with two banks provide the Company access to
$80.0 million of variable rate capital. Of this amount,  long-term variable rate
credit  facilities  provide the  Company  access to $60.0  million of  revolving
credit.  Borrowings  outstanding under these long-term credit facilities totaled
$47.7 million at December 31, 1999.  The Company also has a short-term  variable
rate credit  facility  which  provides  the Company  access to $20.0  million of
revolving  credit.  Borrowings  outstanding under this credit facility were $7.5
million at December 31, 1999, all of which were  classified as short-term  debt.
Each facility allows the Company four interest rate options - the floating prime
rate,  a  fixed  rate  tied to  either  short-term  certificate  of  deposit  or
Eurodollar  rates,  or a fixed rate  based on the  lenders'  cost of funds.  The
short-term revolving credit facility expires in 2000 and the long-term revolving
credit  facilities  expire in 2001 and 2002.  The  Company  intends  to renew or
replace the facilities prior to expiration.

     The terms of the debt  instruments and agreements  contain  covenants which
impose certain  restrictions on the Company,  including limitation of additional
indebtedness and restrictions on the payment of cash dividends.  At December 31,
1999, approximately $96.4 million of retained earnings was available for payment
as dividends.

     Aggregate  maturities  of  long-term  debt  for  each of the  years  ending
December 31, 2000 through  2004,  are $0, $32.0  million,  $19.7  million,  $2.0
million,  and $2.0 million.  Total interest  payments were $19.6 million in 1999
and 1998, and $18.8 million in 1997.

                                       45


(3) INCOME TAXES

     The provision (benefit) for income taxes included the following components:




                                                    1999        1998        1997
                                                  ------------------------------
                                                           (in thousands)
                                                                
Federal:
     Current                                      $    -    $ (6,673)    $(1,614)
     Deferred                                      5,236     (10,098)     11,422
State:
     Current                                         537         644         882
     Deferred                                        795      (3,250)      1,219
Investment tax credit amortization                  (119)       (119)       (119)
- --------------------------------------------------------------------------------
Provision (benefit) for income taxes              $6,449    $(19,496)    $11,790
================================================================================



     The provision  (benefit) for income taxes was an effective rate of 39.4% in
1999,  38.9% in 1998, and 38.6% in 1997. The following  reconciles the provision
(benefit)  for income taxes  included in the  consolidated  statements of income
with  the  provision  (benefit)  which  would  result  from  application  of the
statutory federal tax rate to pretax financial income:



                                                    1999        1998        1997
                                                  ------------------------------
                                                           (in thousands)
                                                                
Expected  provision  (benefit) at federal
   statutory rate of 35%                          $5,732    $(17,532)    $10,677
Increase (decrease) resulting from:
   State income taxes, net of federal
       income tax effect                             866      (1,694)      1,365
   Other                                            (149)       (270)       (252)
- --------------------------------------------------------------------------------
Provision (benefit) for income taxes              $6,449    $(19,496)    $11,790
================================================================================



     The  components  of the Company's net deferred tax liability as of December
31, 1999 and 1998 were as follows:




                                                                1999        1998
                                                            --------------------
                                                                 (in thousands)
                                                                  
Deferred tax liabilities:
     Differences between book and tax basis of property     $123,516    $109,538
     Stored gas                                                8,267       7,583
     Deferred purchased gas costs                              2,289       1,997
     Prepaid pension costs                                     2,086       2,036
     Book over tax basis in partnerships                      10,133       8,647
     Other                                                       415       1,091
- --------------------------------------------------------------------------------
                                                             146,706     130,892
- --------------------------------------------------------------------------------
Deferred tax assets:
     Accrued compensation                                        705         647
     Alternative minimum tax credit carryforward               3,127       3,034
     Net operating loss carryforward                          16,808       6,949
     Other                                                     1,155       1,234
- --------------------------------------------------------------------------------
                                                              21,795      11,864
- --------------------------------------------------------------------------------
Net deferred tax liability                                  $124,911    $119,028
================================================================================



                                       46


     Total income tax payments of $.6 million,  $3.3  million,  and $4.2 million
were made in 1999, 1998, and 1997, respectively.

(4) PENSION PLAN AND OTHER POSTRETIREMENT BENEFITS

     The Company applies SFAS No. 132,  "Employers'  Disclosures  about Pensions
and Other Postretirement  Benefits."  Substantially all employees are covered by
the Company's  defined benefit  pension and  postretirement  benefit plans.  The
following  provides  a  reconciliation  of the  changes  in the  plans'  benefit
obligations, fair value of assets, and funded status as of December 31, 1999 and
1998:




                                                                      Other Postretirement
                                                 Pension Benefits           Benefits
                                              --------------------------------------------
                                                 1999        1998         1999        1998
                                              --------------------------------------------
                                                               (in thousands)
                                                                       
Change in Benefit Obligations:
   Benefit obligation at January 1            $59,194     $47,257      $ 3,832     $ 3,067
   Service cost                                 1,881       2,060           99          87
   Interest cost                                4,130       3,644          261         242
   Amendments                                   5,560           -            -           -
   Actuarial loss (gain)                       (5,359)      7,920         (255)        616
   Benefits paid                               (3,891)     (1,687)        (178)       (180)
- ------------------------------------------------------------------------------------------
   Benefit obligation at December 31          $61,515     $59,194      $ 3,759     $ 3,832
==========================================================================================
Change in Plan Assets:
   Fair value of plan assets at January 1     $71,518     $65,966      $   345     $     -
   Actual return on plan assets                 2,838       7,168           20         (12)
   Employer contributions                           -           -          428         537
   Benefit payments                            (3,878)     (1,616)        (178)       (180)
- ------------------------------------------------------------------------------------------
   Fair value of plan assets at December 31   $70,478     $71,518      $   615     $   345
==========================================================================================
Funded Status:
   Funded status at December 31               $ 8,963     $12,324      $(3,144)    $(3,487)
   Unrecognized net actuarial (gain) loss      (9,237)     (7,441)         926       1,284
   Unrecognized prior service cost              5,417         308            -           -
   Unrecognized transition obligation            (220)       (403)       1,265       1,368
- ------------------------------------------------------------------------------------------
   Prepaid (accrued) benefit cost             $ 4,923     $ 4,788      $  (953)   $   (835)
==========================================================================================



     The benefit  obligation  and fair value of plan assets at December 31, 1999
include  $5.5 million to $6.0  million  related to  employees  of the  Company's
Missouri gas distribution  segment that will be transferred in 2000 upon closing
the sale of the Company's Missouri gas distribution assets.

     The  Company's  supplemental  retirement  plan has an  accumulated  benefit
obligation in excess of plan assets. The plan's  accumulated  benefit obligation
was $233,000 and $198,000 at December 31, 1999 and 1998, respectively. There are
no plan  assets in the  supplemental  retirement  plan due to the  nature of the
plan.

                                       47


     Net periodic  pension and other  postretirement  benefit  costs include the
following components for 1999, 1998, and 1997:



                                                                                Other Postretirement
                                                 Pension Benefits                     Benefits
                                          -------------------------------------------------------------
                                            1999       1998       1997       1999       1998       1997
                                          -------------------------------------------------------------
                                                                  (in thousands)
                                                                                 
Service cost                             $ 1,881    $ 2,060    $ 1,744       $ 99       $ 87       $ 90
Interest cost                              4,130      3,644      3,213        261        242        213
Expected return on plan assets            (6,259)    (5,863)    (5,007)       (28)         -          -
Amortization of transition obligation       (183)      (183)      (183)       103        103        103
Recognized net actuarial (gain) loss        (142)      (150)      (211)       111         55         40
Amortization of prior service costs          451         46         49          -          -          -
- -------------------------------------------------------------------------------------------------------
                                         $  (122)   $  (446)   $  (395)      $546       $487       $446
=======================================================================================================



     Prior to 1998,  the Company's  pension plans provided for benefits based on
years of benefit service and the employee's  "average  compensation" as defined.
During 1998,  the Company  amended its plans to become "cash balance" plans on a
prospective  basis.  A cash balance plan  provides  benefits  based upon a fixed
percentage of an employee's annual compensation. The Company's funding policy is
to contribute amounts which are actuarially determined to provide the plans with
sufficient assets to meet future benefit payment  requirements and which are tax
deductible.

     The postretirement  benefit plans provide contributory health care and life
insurance  benefits.  Employees  become eligible for these benefits if they meet
age  and  service  requirements.  Generally,  the  benefits  paid  are a  stated
percentage  of medical  expenses  reduced by  deductibles  and other  coverages.
During 1998, the Company established trusts to partially fund its postretirement
benefit obligations.

     The weighted  average  assumptions used in the measurement of the Company's
benefit obligations for 1999 and 1998 are as follows:




                                                                 Other Postretirement
                                     Pension Benefits                  Benefits
                                    -------------------------------------------------
                                    1999          1998            1999           1998
                                    -------------------------------------------------
                                                                     
Discount rate                       7.50%         6.75%           7.50%          6.75%
Expected return on plan assets      9.00%         9.00%           5.00%          5.00%
Rate of compensation increase       4.50%         5.00%            n/a            n/a
=====================================================================================



     For  measurement  purposes a 9% annual  rate of  increase in the per capita
cost of covered  medical  benefits  and an 8% annual rate of increase in the per
capita cost of dental benefits was assumed for 2000. These rates were assumed to
gradually  decrease to 6% for medical  benefits  and 5% for dental  benefits for
2011 and remain at that level thereafter.

                                       48


     Assumed  health  care cost  trend  rates have a  significant  effect on the
amounts  reported for the health care plans.  A one  percentage  point change in
assumed health care cost trend rates would have the following effects:




                                                      1% Increase    1% Decrease
                                                      --------------------------
                                                            (in thousands)
                                                                     
Effect on the total service and interest
   cost components                                           $ 46          $ (39)
Effect on postretirement benefit obligation                  $400          $(344)
================================================================================



(5) NATURAL GAS AND OIL PRODUCING ACTIVITIES

     All of the  Company's  gas and oil  properties  are  located  in the United
States.  The table below sets forth the results of  operations  from gas and oil
producing activities:




                                                    1999        1998        1997
                                                 -------------------------------
                                                           (in thousands)
                                                               
Sales                                           $ 75,039    $ 86,232    $100,129
Production (lifting) costs                       (14,039)    (15,807)    (17,155)
Depreciation, depletion and amortization         (34,230)    (39,444)    (40,777)
Write-down of oil and gas properties                   -     (66,383)          -
- --------------------------------------------------------------------------------
                                                  26,770     (35,402)     42,197
Income tax benefit (expense)                     (10,528)     13,913     (16,161)
- --------------------------------------------------------------------------------
Results of operations                           $ 16,242    $(21,489)   $ 26,036
================================================================================



     The results of operations  shown above exclude overhead and interest costs.
Income tax expense is  calculated  by applying  the  statutory  tax rates to the
revenues less costs,  including  depreciation,  depletion and amortization,  and
after giving effect to permanent differences and tax credits.

     The table  below  sets  forth  capitalized  costs  incurred  in gas and oil
property acquisition, exploration, and development activities during 1999, 1998,
and 1997:




                                                      1999       1998       1997
                                                   -----------------------------
                                                            (in thousands)
                                                                
Property acquisition costs                         $19,845    $12,729    $10,911
Exploration costs                                   19,519     14,273     33,225
Development costs                                   19,059     24,709     28,825
- --------------------------------------------------------------------------------
Capitalized costs incurred                         $58,423    $51,711    $72,961
================================================================================
Amortization per Mcf equivalent                     $1.004     $1.039     $1.057
================================================================================



     Capitalized  interest  is  included  as  part  of the  cost  of oil and gas
properties. The Company capitalized $3.3 million, $3.9 million, and $4.5 million
during 1999,  1998,  and 1997,  respectively,  based on the  Company's  weighted
average cost of borrowings used to finance the expenditures.

     In addition to capitalized interest,  the Company also capitalized internal
costs of $7.4 million,  $7.7 million,  and $6.0 million  during 1999,  1998, and
1997,  respectively.  These internal costs were directly related to acquisition,
exploration and  development  activities and are included as part of the cost of
oil and gas properties.

                                       49


     The following table shows the  capitalized  costs of gas and oil properties
and the related accumulated depreciation, depletion and amortization at December
31, 1999 and 1998:




                                                                 1999       1998
                                                             -------------------
                                                                 (in thousands)
                                                                  
Proved properties                                            $774,473   $703,669
Unproved properties                                            41,726     55,194
- --------------------------------------------------------------------------------
Total capitalized costs                                       816,199    758,863
Less: Accumulated depreciation, depletion and amortization    419,517    386,384
- --------------------------------------------------------------------------------
Net capitalized costs                                        $396,682   $372,479
================================================================================



     The  table  below  sets  forth the  composition  of net  unevaluated  costs
excluded from  amortization as of December 31, 1999.  Included in these costs is
$13.2 million related to 3-D seismic  projects in south  Louisiana.  These costs
and subsequent  costs to be incurred will be evaluated over several years as the
seismic data is  interpreted  and the acreage is explored.  The remaining  costs
excluded from  amortization are related to properties which are not individually
significant  and on which the  evaluation  process has not been  completed.  The
Company is,  therefore,  unable to estimate when these costs will be included in
the amortization computation.




                                   1999      1998      1997     Prior      Total
                                ------------------------------------------------
                                                  (in thousands)
                                                          
Property acquisition costs      $ 5,814    $4,661    $1,454    $3,276    $15,205
Exploration costs                 5,308     3,992     6,934     1,729     17,963
Capitalized interest                411       910     1,556     1,509      4,386
- --------------------------------------------------------------------------------
                                $11,533    $9,563    $9,944    $6,514    $37,554
================================================================================



(6) NATURAL GAS AND OIL RESERVES (UNAUDITED)

     The following table  summarizes the changes in the Company's proved natural
gas and oil reserves for 1999, 1998, and 1997:




                                                       1999                 1998                 1997
                                                -----------------------------------------------------------
                                                   Gas       Oil        Gas       Oil        Gas      Oil
                                                 (MMcf)    (MBbls)    (MMcf)    (MBbls)    (MMcf)   (MBbls)
                                                -----------------------------------------------------------
                                                                                   
Proved reserves, beginning of year              303,667     6,850    291,378     7,852    297,467    8,238
Revisions of previous estimates                  (7,464)    1,155      1,064      (696)       861      (51)
Extensions, discoveries, and other additions     34,730       225     44,814       442     26,430      426
Production                                      (29,444)     (578)   (32,668)     (703)   (33,355)    (749)
Acquisition of reserves in place                  9,762       576          -         -         76        -
Disposition of reserves in place                 (3,728)     (369)      (921)      (45)      (101)     (12)
- ----------------------------------------------------------------------------------------------------------
Proved reserves, end of year                    307,523     7,859    303,667     6,850    291,378    7,852
==========================================================================================================
Proved, developed reserves:
Beginning of year                               258,092     6,370    252,393     7,312    255,234    7,804
End of year                                     250,290     7,154    258,092     6,370    252,393    7,312
==========================================================================================================



                                       50


     The  "Standardized  Measure of Discounted Future Net Cash Flows Relating to
Proved Oil and Gas Reserves"  (standardized measure) is a disclosure required by
SFAS  No.  69,  "Disclosures  About  Oil  and  Gas  Producing  Activities."  The
standardized  measure  does not purport to present  the fair  market  value of a
company's  proved gas and oil  reserves.  In addition,  there are  uncertainties
inherent  in  estimating  quantities  of  proved  reserves.   Substantially  all
quantities  of gas and oil  reserves  owned by the  Company  were  estimated  or
audited  by  the  independent  petroleum  engineering  firm  of  K  &  A  Energy
Consultants, Inc.

     Following  is the  standardized  measure  relating  to  proved  gas and oil
reserves at December 31, 1999, 1998, and 1997:




                                                                 1999         1998         1997
                                                            -----------------------------------
                                                                         (in thousands)
                                                                             
Future cash inflows                                         $ 989,997    $ 820,522    $ 973,536
Future production and development costs                      (227,361)    (176,130)    (197,021)
Future income tax expense                                    (247,408)    (206,097)    (261,173)
- -----------------------------------------------------------------------------------------------
Future net cash flows                                         515,228      438,295      515,342
10% annual discount for estimated timing of cash flows       (253,153)    (215,502)    (256,279)
- -----------------------------------------------------------------------------------------------
Standardized measure of discounted future net cash flows    $ 262,075    $ 222,793    $ 259,063
===============================================================================================



     Under the  standardized  measure,  future cash  inflows  were  estimated by
applying  year-end  prices,  adjusted  for  known  contractual  changes,  to the
estimated  future  production of year-end proved  reserves.  Future cash inflows
were reduced by  estimated  future  production  and  development  costs based on
year-end  costs to  determine  pretax cash  inflows.  Future  income  taxes were
computed by  applying  the  year-end  statutory  rate,  after  consideration  of
permanent  differences,  to the excess of pretax cash inflows over the Company's
tax basis in the  associated  proved  gas and oil  properties.  Future  net cash
inflows after income taxes were  discounted  using a 10% annual discount rate to
arrive at the standardized measure.

     Following  is an analysis  of changes in the  standardized  measure  during
1999, 1998, and 1997:




                                                            1999        1998        1997
- ----------------------------------------------------------------------------------------
                                                                   (in thousands)
                                                                       
Standardized measure, beginning of year                 $222,793    $259,063    $370,944
Sales and transfers of gas and oil produced, net of
   production costs                                      (61,000)    (70,425)    (82,975)
Net changes in prices and production costs                48,506     (71,400)   (173,730)
Extensions, discoveries, and other additions, net of
   future production and development costs                48,279      61,146      41,267
Acquisition of reserves in place                          14,765           -         116
Revisions of previous quantity estimates                    (612)     (3,024)        646
Accretion of discount                                     32,447      38,445      55,852
Net change in income taxes                               (17,015)     23,714      62,186
Changes in production rates (timing) and other           (26,088)    (14,726)    (15,243)
- ----------------------------------------------------------------------------------------
Standardized measure, end of year                       $262,075    $222,793    $259,063
========================================================================================



                                       51


(7) INVESTMENT IN UNCONSOLIDATED PARTNERSHIP

     At December 31, 1999, the Company held a 25% general  partnership  interest
in the NOARK Partnership. NOARK Pipeline was formerly a 258-mile long intrastate
gas  transmission  system which extended  across northern  Arkansas.  In January
1998,  the Company  entered into an  agreement  with Enogex Inc.  (Enogex)  that
resulted in the  expansion of the NOARK  Pipeline and provided the pipeline with
access to Oklahoma gas supplies  through an  integration of NOARK with the Ozark
Gas  Transmission  System  (Ozark).  Enogex is a subsidiary  of OGE Energy Corp.
Ozark was a 437-mile  interstate pipeline system which began in eastern Oklahoma
and  terminated  in  eastern  Arkansas.  Enogex  acquired  the Ozark  system and
contributed  it to  the  NOARK  partnership.  Enogex  also  acquired  the  NOARK
partnership  interests not owned by  Southwestern.  The acquisition of Ozark and
its  integration  with  NOARK  Pipeline  was  approved  by  the  Federal  Energy
Regulatory Commission in late 1998 at which time NOARK Pipeline was converted to
an interstate pipeline and operated in combination with Ozark. Enogex funded the
acquisition of Ozark and the expansion and integration with NOARK Pipeline which
resulted in the Company's  ownership  interest in the partnership  decreasing to
25% from 48%.

     The  Company's  investment  in NOARK  totaled $14.0 million at December 31,
1999 and $13.8 million at December 31, 1998.  The Company's  investment in NOARK
includes  advances of $2.3 million made during 1999,  $10.1  million made during
1998, and $5.0 million made during 1997. Advances in 1998 included the Company's
share of costs related to the prepayment of NOARK's Senior Secured Notes.  Other
advances are made primarily to provide  certain minimum cash balances to service
NOARK's  long-term  debt. See Note 11 for further  discussion of NOARK's funding
requirements and the Company's investment in NOARK.

     NOARK's  financial  position  at December  31, 1999 and 1998 is  summarized
below:




                                                                1999        1998
                                                            --------------------
                                                                 (in thousands)
                                                                  
Current assets                                              $  7,056    $  9,535
Noncurrent assets                                            178,195     175,361
- --------------------------------------------------------------------------------
                                                            $185,251    $184,896
================================================================================
Current liabilities                                         $ 10,413    $  8,576
Long-term debt                                                75,000      77,000
Partners' capital                                             99,838      99,320
- --------------------------------------------------------------------------------
                                                            $185,251    $184,896
================================================================================



     The Company's  share of NOARK's  pretax loss,  before the effect of accrued
interest expense on general partner loans, was $2.0 million,  $3.1 million,  and
$4.5 million for 1999,  1998, and 1997,  respectively.  The Company  records its
share of NOARK's  pretax loss in other  income  (expense) on the  statements  of
income.

     NOARK's  results of  operations  for 1999,  1998,  and 1997 are  summarized
below:




                                                    1999        1998        1997
                                                 -------------------------------
                                                           (in thousands)
                                                                
Operating revenues                               $40,358     $17,445     $ 4,963
Pretax net loss                                  $(3,564)    $(4,114)    $(8,850)
================================================================================



                                       52


(8) FINANCIAL INSTRUMENTS AND RISK MANAGEMENT

Fair Value of Financial Instruments
The following  methods and  assumptions  were used to estimate the fair value of
each class of financial  instruments for which it is practicable to estimate the
value:

     Cash, Customer Deposits, and  Short-Term  Debt: The  carrying  amount  is a
reasonable estimate of fair value.
     Long-Term Debt: The fair value of the Company's long-term debt is estimated
based on the expected current rates  which would be  offered to the  Company for
debt of the same maturities.
     Commodity Hedges:  The fair value of all hedging  financial  instruments is
the amount at which  they could be  settled,  based on quoted  market  prices or
estimates obtained from dealers.  The carrying amounts and estimated fair values
of the Company's financial  instruments as of December 31, 1999 and 1998 were as
follows:



                                           1999                      1998
                                  ----------------------------------------------
                                  Carrying       Fair       Carrying       Fair
                                   Amount       Value        Amount       Value
                                  ----------------------------------------------
                                                 (in thousands)
                                                            
Cash                                $1,240      $1,240        $1,622      $1,622
Customer deposits                   $6,021      $6,021        $5,635      $5,635
Short-term debt                     $7,500      $7,500        $1,536      $1,536
Long-term debt                    $294,700    $289,193      $281,900    $290,621
Commodity hedges                      $640       $(399)       $1,276      $8,227
================================================================================



Derivatives and Price Risk Management
     In June 1998, the Financial  Accounting  Standards Board (FASB) issued SFAS
No. 133,  "Accounting for Derivative  Instruments and Hedging  Activities." SFAS
No. 133  establishes  accounting  and reporting  standards  requiring that every
derivative  instrument  (including  certain derivative  instruments  embedded in
other  contracts)  be  recorded  in the  balance  sheet  as  either  an asset or
liability  measured at its fair value. SFAS No. 133 requires that changes in the
derivative's  fair value be  recognized  currently in earnings  unless  specific
hedge  accounting  criteria are met.  Special  accounting for qualifying  hedges
allows a derivative's  gains and losses to offset related  results on the hedged
item  in the  income  statement,  and  requires  that a  company  must  formally
document,  designate,  and assess the effectiveness of transactions that receive
hedge accounting.

     In June 1999,  the FASB  issued SFAS No. 137,  "Accounting  for  Derivative
Instruments  and Hedging  Activities  - Deferral of the  Effective  Date of FASB
Statement  No.  133." SFAS No. 137 delayed the required  implementation  date of
SFAS No.  133 by one  year.  SFAS No.  133 is now  effective  for  fiscal  years
beginning after June 15, 2000. SFAS No. 133, as amended,  must be applied to (a)
derivative  instruments and (b) certain derivative  instruments  embedded in all
hybrid  contracts or, at a company's  option,  only hybrid  contracts  that were
issued,  acquired,  or  substantively  modified  after either January 1, 1998 or
January 1, 1999 (a company may elect either transition date).

     The Company has not yet  quantified the impacts of adopting SFAS No. 133 on
its financial statements, nor has it determined the method of adoption. However,
it  should be noted  that  SFAS No.  133  could  increase  volatility  in future
reported earnings and other comprehensive income.

     The Company uses natural gas and crude oil swap  agreements  and options to
reduce the  volatility  of  earnings  and cash flow due to  fluctuations  in the
prices  of  natural  gas and oil.  The  Board of  Directors  has  approved  risk
management

                                       53


policies and  procedures  to utilize  financial  products  for the  reduction of
defined  commodity  price  risks.  These  policies  prohibit   speculation  with
derivatives and limit swap agreements to counterparties  with appropriate credit
standings.

     The Company uses over-the-counter natural gas and crude oil swap agreements
and options to hedge sales of Company  production and marketing activity against
the inherent  price risks of adverse price  fluctuations  or locational  pricing
differences  between  a  published  index and the  NYMEX  (New  York  Mercantile
Exchange)  futures  market.  These swaps include (1)  transactions  in which one
party will pay a fixed  price (or  variable  price) for a notional  quantity  in
exchange  for  receiving a variable  price (or fixed price) based on a published
index (referred to as price swaps),  and (2) transactions in which parties agree
to pay a price based on two different indices (referred to as basis swaps).

     At December 31, 1999, the Company had  outstanding  natural gas price swaps
on total  notional  volumes of 17.0 Bcf. Of the total,  the Company will receive
fixed prices ranging from $2.13 to $2.87 per MMBtu on 16.8 Bcf. Under  contracts
covering  the  remaining  .2 Bcf,  the  Company  will make  average  fixed price
payments  of $2.68 per  MMBtu and  receive  variable  prices  based on the NYMEX
futures market.  At December 31, 1999, the Company held outstanding  basis swaps
on a notional  volume of .1 Bcf.  At December  31,  1999,  the Company  also had
outstanding crude oil swaps to receive fixed prices of $18.87 per barrel in 2000
and $17.49 per barrel in 2001 on notional  volumes of 96,000  barrels and 72,000
barrels,  respectively.  The Company's price risk management  activities reduced
revenues  $1.1 million in 1999,  increased  revenues  $7.4 million in 1998,  and
decreased revenues $2.7 million in 1997.

     The Company  uses  options to fix a floor,  a ceiling,  or both a floor and
ceiling (a "collar") for prices on its production volumes. At December 31, 1999,
the Company had a crude oil price floor of $18.00 per barrel (based on the NYMEX
futures market) on total notional volumes of 675,000 barrels covering production
during  calendar  years 2000 through  2001.  Subsequent to December 31, 1999 the
Company  offset its  position  relating  to the  $18.00  per  barrel  floor on a
notional amount of 320,837 barrels covering eleven months of 2000 production and
replaced  the floor with a crude oil swap to receive a fixed price of $24.02 per
barrel.

     The  primary  market  risk  related to these  derivative  contracts  is the
volatility in market prices for natural gas and crude oil. However,  this market
risk is  offset  by the gain or loss  recognized  upon the  related  sale of the
natural gas or oil that is hedged.  Credit risk relates to the risk of loss as a
result of  non-performance by the Company's  counterparties.  The counterparties
are primarily major investment and commercial  banks which  management  believes
present minimal credit risks.  The credit quality of each  counterparty  and the
level  of  financial   exposure  the  Company  has  to  each   counterparty  are
periodically reviewed to ensure limited credit risk exposure.

(9) STOCK OPTIONS

     The  Southwestern  Energy  Company  1993 Stock  Incentive  Plan (1993 Plan)
provides for the  compensation  of officers and key employees of the Company and
its  subsidiaries.  The 1993 Plan  provides  for  grants of  options,  shares of
restricted  stock,  and  stock  bonuses  that  in the  aggregate  do not  exceed
1,700,000  shares,  the grant of stand-alone stock  appreciation  rights (SARs),
shares of phantom  stock and cash  awards,  the  shares  related to which in the
aggregate do not exceed  1,700,000  shares,  and the grant of limited and tandem
SARs (all terms as defined in the 1993 Plan).  The types of incentives which may
be awarded are  comprehensive  and are intended to enable the Board of Directors
to structure the most  appropriate  incentives and to address  changes in income
tax laws which may be enacted over the term of the plan.  The  Company  has also
awarded  stock  option  grants  outside  the 1993  Plan  to certain  non-officer
employees and to certain officers at the time of their hire.

                                       54


     The  Southwestern  Energy  Company  1993 Stock  Incentive  Plan for Outside
Directors  provides for annual stock option grants of 12,000 shares (with 12,000
limited SARs) to each  non-employee  director.  Options may be awarded under the
plan on no more than 240,000 shares.

     The Company's 1985  Nonqualified  Stock Option Plan expired in 1992, except
with respect to awards then  outstanding.  The following  tables summarize stock
option activity for the years 1999,  1998, and 1997 and provide  information for
options outstanding at December 31, 1999:




                                             1999                   1998                   1997
                                      ------------------------------------------------------------------
                                                  Weighted               Weighted               Weighted
                                        Number     Average     Number     Average     Number     Average
                                          of      Exercise       of      Exercise       of      Exercise
                                        Shares      Price      Shares      Price      Shares      Price
                                      ------------------------------------------------------------------
                                                                               
Options outstanding at January 1      1,634,901    $12.15    1,619,114    $13.37    1,501,641    $13.39
Granted                                 562,250     $6.18      394,900     $8.00      433,248    $12.58
Exercised                                 1,333     $7.31       22,200     $5.58       56,850     $5.96
Canceled                                134,619    $12.68      356,913    $13.48      258,925    $13.82
- --------------------------------------------------------------------------------------------------------
Options outstanding at December 31    2,061,199    $10.49    1,634,901    $12.15    1,619,114    $13.37
========================================================================================================






                                  Options Outstanding                     Options Exercisable
                         ----------------------------------------------------------------------
                                                     Weighted
                                        Weighted      Average                          Weighted
                           Options       Average     Remaining            Options       Average
   Range of              Outstanding    Exercise    Contractual         Exercisable    Exercise
Exercise Prices          at Year End      Price     Life (Years)        at Year End      Price
- -----------------------------------------------------------------------------------------------
                                                                         
$6.00 - $9.44               880,550       $6.59         9.5               110,758        $7.35
$10.06 - $13.38             636,934      $12.09         6.1               480,153       $12.14
$14.00 - $17.50             543,715      $14.95         5.4               393,048       $15.09
- -----------------------------------------------------------------------------------------------
                          2,061,199      $10.49         7.4               983,959       $12.78
===============================================================================================



     All options are issued at fair market value at the date of grant and expire
ten years  from the date of  grant.  Options  generally  vest to  employees  and
directors over a three to four year period from the date of grant.  Of the total
options  outstanding,  325,000  performance  accelerated options were granted in
1994 at an option price of $14.63.  These  options vest over a four-year  period
beginning  six years  from the date of grant or  earlier  if  certain  corporate
performance criteria are achieved.

     The Company has granted  303,240  shares of  restricted  stock to employees
through 1999. Of this total,  260,690  shares vest over a three-year  period and
the  remaining  shares vest over a five-year  period.  The related  compensation
expense is being  amortized over the vesting  periods.  As of December 31, 1999,
103,213  shares have vested to employees and 11,246  shares have been  cancelled
and returned to treasury shares.

                                       55


     The  Company  applies  the  disclosure-only  provisions  of SFAS  No.  123,
"Accounting for Stock-Based Compensation." Accordingly, no compensation cost has
been  recognized  for the stock  option  plans.  Had  compensation  cost for the
Company's stock option plans been  determined  consistent with the provisions of
SFAS No. 123, the  Company's  net income  (loss) and  earnings  (loss) per share
would have been reduced to the pro forma amounts indicated below:




                                                    1999        1998        1997
                                                  ------------------------------
                                                                
Net income (loss), in thousands
     As reported                                  $9,927    $(30,597)    $18,715
     Pro forma                                    $9,241    $(31,201)    $18,378
Basic earnings (loss) per share
     As reported                                    $.40      $(1.23)       $.76
     Pro forma                                      $.37      $(1.25)       $.74
Diluted earnings (loss) per share
     As reported                                    $.40      $(1.23)       $.76
     Pro forma                                      $.37      $(1.25)       $.74
================================================================================



     Because  the SFAS No.  123  method of  accounting  has not been  applied to
options  granted prior to January 1, 1995, the resulting pro forma  compensation
cost may not be  representative of that to be expected in future years. The fair
value  of each  option  grant  is  estimated  on the  date of  grant  using  the
Black-Scholes   option   pricing  model  with  the  following   weighted-average
assumptions:  dividend  yield of 2.3% to 4.0%;  expected  volatility of 37.0% to
39.0%; risk-free interest rate of 6.0% to 6.6%; and expected lives of 6 years.

(10) COMMON STOCK PURCHASE RIGHTS

     In 1999, the Company's  Common Share  Purchase  Rights Plan was amended and
extended for an additional  ten years.  Per the terms of the amended  plan,  one
common  share  purchase  right  is  attached  to each  outstanding  share of the
Company's common stock.  Each right entitles the holder to purchase one share of
common stock at an exercise price of $40.00, subject to adjustment. These rights
will  become  exercisable  in the  event  that a  person  or group  acquires  or
commences  a  tender  or  exchange  offer  for  15% or  more  of  the  Company's
outstanding  shares or the Board  determines that a holder of 10% or more of the
Company's  outstanding  shares  presents a threat to the best  interests  of the
Company. At no time will these rights have any voting power.

     If any person or entity  actually  acquires 15% of the common stock (10% or
more if the Board determines such acquiror is adverse), rightholders (other than
the 15% or 10% stockholder) will be entitled to buy, at the right's then current
exercise  price,  the  Company's  common  stock with a market value of twice the
exercise  price.  Similarly,  if the  Company is  acquired  in a merger or other
business  combination,  each right will entitle its holder to  purchase,  at the
right's then current exercise price, a number of the surviving  company's common
shares having a market value at that time of twice the right's exercise price.

     The rights may be redeemed by the Board for $.01 per right or exchanged for
common  shares  on a  one-for-one  basis  prior to the  time  that  they  become
exercisable.  In the event, however, that redemption of the rights is considered
in connection with a proposed  acquisition of the Company,  the Board may redeem
the  rights   only  on  the   recommendation

                                       56


of its  independent  directors  (nonmanagement  directors who are not affiliated
with the proposed acquiror). These rights expire in 2009.

(11) CONTINGENCIES AND COMMITMENTS

     The  Company  and  the  other  general  partner  of  NOARK  have  severally
guaranteed the principal and interest  payments on NOARK's 7.15% Notes due 2018.
The  Company's  share of the several  guarantee is 60%. At December 31, 1999 and
1998,  the  principal  outstanding  for these Notes was $77.0  million and $79.0
million,   respectively.  The  Notes  were  issued  in  June  1998  and  require
semi-annual  principal payments of $1.0 million.  The proceeds from the issuance
of the  Notes  were  used to repay  temporary  financing  provided  by the other
general  partner and  outstanding  amounts under an unsecured  revolving  credit
agreement.  The temporary  financing  provided by the other general  partner was
incurred in connection with the prepayment in early 1998 of NOARK's 9.74% Senior
Secured notes. Under the several guarantee,  the Company is required to fund its
share of NOARK's debt service which is not funded by operations of the pipeline.
As a result of the integration of NOARK Pipeline with the Ozark Gas Transmission
System,  as discussed further in Note 7, management of the Company believes that
it will realize its investment in NOARK over the life of the system.  Therefore,
no  provision  for  any  loss  has  been  made  in  the  accompanying  financial
statements.   Additionally,   the  Company's  gas  distribution  subsidiary  has
transportation  contracts for firm capacity of 82.3 MMcfd on NOARK's  integrated
pipeline  system.  These  contracts  expire in 2002 and 2003,  and are renewable
year-to-year thereafter until terminated by 180 days' notice.

     In May 1996, a class action suit was filed against the Company on behalf of
royalty owners alleging  improprieties in the disbursements of royalty proceeds.
A trial was held on the class action suit  beginning in late September 1998 that
resulted  in  a  verdict  against  the  Company  and  two  of  its  wholly-owned
subsidiaries,  SEECO,  Inc. and Arkansas  Western Gas Company,  in the amount of
$62.1 million. The trial judge subsequently awarded pre-judgment  interest in an
amount of $31.1 million, and post-judgment interest accrued from the date of the
judgment  at the rate of 10% per annum  simple  interest.  The  Company has been
required by the state  court to post a judgment  bond which now stands at $109.3
million   (verdict   amount  plus   pre-judgment   interest  and  20  months  of
post-judgment  interest) in order to stay the jury's verdict and proceed with an
appeal process.  The bond was placed by a surety company and was  collateralized
by unsecured letters of credit.

     The  verdict  was  returned  following  a trial on the  issues of the class
action lawsuit  brought by certain  royalty  owners of SEECO,  Inc., who contend
that since 1979 the defendants breached implied covenants in certain oil and gas
leases,  misrepresented  or failed to disclose  material facts to royalty owners
concerning gas purchase contracts between the Company's subsidiaries, and failed
to fulfill other  alleged  common law duties to the members of the royalty owner
plaintiff  class.  The litigation was commenced in May 1996 and was disclosed by
the Company at that time.

     The Company  believes that the jury's  verdict was wrong as a matter of law
and fact and that incorrect  rulings by the trial judge  (including  evidentiary
rulings and prejudicial jury  instructions)  provide  significant  grounds for a
successful  appeal.  The Company had asked the trial judge to recuse himself due
to his apparent bias toward the  plaintiffs and had also filed a motion with the
trial court for judgment notwithstanding the verdict or, in the alternative, for
a new  trial.  These  motions  were  denied.  The  Company  has  filed  and will
vigorously  prosecute  an  appeal  in  the  Arkansas  Supreme  Court.  Based  on
discussions  with outside legal counsel  management  remains  confident that the
jury's verdict will be overturned and the case remanded for a new trial.  If the
Company is not  successful  in its appeal from the jury  verdict,  the Company's
financial  condition and results of operations would be materially and adversely
affected. However,

                                       57


management  believes that the Company's  ultimate  liability,  if any, resulting
from this case will not be material to its  financial  position,  but in any one
year could be significant to the results of operations. At December 31, 1999 and
1998, no amounts had been accrued on this matter.

     In its Form 8-K filed July 2, 1996,  the Company  disclosed  that a lawsuit
relating  to  overriding  royalty  interests  in  certain  Arkansas  oil and gas
properties had been filed against it and two of its  wholly-owned  subsidiaries.
The lawsuit,  which was brought by a party who was  originally  included in (but
opted out of) the class  action  litigation  described  above,  involves  claims
similar to those upon which  judgment was  rendered  against the Company and its
subsidiaries.  In  September  1998,  another  party  who  opted out of the class
threatened  the  Company  with  similar  litigation.  While the amounts of these
pending and threatened claims could be significant,  management believes,  based
on its extensive  investigations  and trial  preparation,  that these claims are
without merit, and that the Company's  ultimate  liability,  if any, will not be
material to its consolidated  financial position or results of operations.  This
matter  went to a non-jury  trial as to  liability  on January  10, 2000 and the
Company is awaiting the court's ruling.

     The United States  Minerals  Management  Service  (MMS),  a federal  agency
responsible  for  the   administration   of  federal  oil  and  gas  leases,  is
investigating  the Company and its  subsidiaries in respect of claims similar to
those in the class  action  litigation.  MMS was  included  in the class  action
litigation against its objections,  but has not pursued further action to remove
itself from the class. If MMS does remove itself from the class,  its claims may
be brought separately under federal statutes that provide for treble damages and
civil penalties. In such event, the Company believes it would have defenses that
were not available in the class action litigation. While the aggregate amount of
MMS's  claims  could  be  significant,   management   believes,   based  on  its
investigations,  that the  Company's  ultimate  liability,  if any,  will not be
material to its consolidated financial position or results of operations.

     As previously  reported,  the  Company's  subsidiary,  Southwestern  Energy
Production  Company  (SEPCO),  filed  suit  in  1997  against  several  parties,
including an outside consultant previously employed by SEPCO, alleging breach of
contract,  fraud,  and  other  causes  of action  in  connection  with  services
performed on SEPCO's south Louisiana exploration projects. On June 23, 1998, the
outside consultant filed a counterclaim  against SEPCO. In 1999, this matter was
settled  for an  amount  that was not  material  to the  Company's  consolidated
financial position or results of operations.

     The Company is subject to laws and  regulations  relating to the protection
of the environment.  The Company's policy is to accrue environmental and cleanup
related  costs of a noncapital  nature when it is both probable that a liability
has been  incurred and when the amount can be reasonably  estimated.  Management
believes any future  remediation or other compliance related costs will not have
a material effect on the financial position or reported results of operations of
the Company.

     The Company is subject to other  litigation  and claims that have arisen in
the  ordinary  course of  business.  The  Company  accrues for such items when a
liability is both  probable and the amount can be reasonably  estimated.  In the
opinion of management, the results of such litigation and claims will not have a
material  effect on the results of operations  or the financial  position of the
Company.

                                       58


(12) SEGMENT INFORMATION

     The  Company  applies  SFAS No.  131,  "Disclosures  About  Segments  of an
Enterprise and Related  Information." The Company's reportable business segments
have been identified based on the differences in products or services  provided.
Revenues  for the  exploration  and  production  segment  are  derived  from the
production  and  sale  of  natural  gas  and  crude  oil.  Revenues  for the gas
distribution  segment arise from the  transportation  and sale of natural gas at
retail.  The marketing  segment  generates revenue through the marketing of both
Company and third party produced gas volumes.

     Summarized  financial  information for the Company's reportable segments is
shown in the  following  table.  The "Other"  column  includes  items related to
non-reportable  segments  (real estate and pipeline  operations)  and  corporate
items.



                                                    Exploration
                                                        and           Gas
                                                    Production    Distribution   Marketing   Other       Total
                                                    -----------------------------------------------------------
                                                                          (in thousands)
                                                                                        
1999
Revenues from external customers                     $ 51,533       $132,293      $96,570   $     -    $280,396
Intersegment revenues                                  23,506            127       40,956       416      65,005
Operating income                                       16,451         17,187        2,142       278      36,058
Depreciation, depletion and amortization expense       34,230          7,186           92        95      41,603
Interest expense (1)                                   11,345          5,027            -       979      17,351
Provision (benefit) for income taxes (1)                1,806          4,569          859      (785)      6,449
Assets                                                435,022        190,731       11,212    34,481(2)  671,446
Capital expenditures                                   59,004          7,124            9       830      66,967
===============================================================================================================
1998
Revenues from external customers                     $ 55,347       $134,579      $76,367   $    12    $266,305
Intersegment revenues                                  30,885            132       20,808       608      52,433
Operating income (loss)                               (47,273)        16,029        1,800       493     (28,951)
Depreciation, depletion and amortization expense       39,444          7,296           41       136      46,917
Write-down of oil and gas properties                   66,383              -            -         -      66,383
Interest expense (1)                                   10,906          5,299           38       943      17,186
Provision (benefit) for income taxes (1)              (23,238)         4,028          704      (990)    (19,496)
Assets                                                408,193        192,396        8,905    38,126(2)  647,620
Capital expenditures                                   52,376         10,108            8     1,867      64,359
===============================================================================================================
1997
Revenues from external customers                     $ 56,658       $153,993      $65,435   $   103    $276,189
Intersegment revenues                                  43,471            162       17,372       601      61,606
Operating income                                       33,303         16,941        1,315       377      51,936
Depreciation, depletion and amortization expense       40,777          7,227           26       178      48,208
Interest expense (1)                                   10,090          5,484          100       740      16,414
Provision (benefit) for income taxes (1)                9,054          4,157          476    (1,897)     11,790
Assets                                                460,193        204,223        7,085    39,365(2)  710,866
Capital expenditures                                   73,526         12,561           45     2,689      88,821
===============================================================================================================

<FN>
(1) Interest expense and the provision  (benefit) for income taxes by segment is
an allocation of corporate  amounts as debt and income tax expense (benefit) are
incurred at the corporate level.

(2) Other assets includes the Company's  equity  investment in the operations of
NOARK (see Note 7), corporate  assets not allocated to segments,  and assets for
non-reportable segments.

</FN>


                                       59


     Intersegment  sales by the exploration and production segment and marketing
segment to the gas  distribution  segment are priced in accordance with terms of
existing contracts and current market conditions.  Parent company assets include
furniture and fixtures,  prepaid debt costs,  and prepaid pension costs.  Parent
company general and administrative  costs,  depreciation expense and taxes other
than income are  allocated  to segments.  All of the  Company's  operations  are
located within the United States.

(13) QUARTERLY RESULTS (UNAUDITED)

     The following is a summary of the quarterly  results of operations  for the
years ended December 31, 1999 and 1998:




Quarter Ended                                  March 31      June 30    September 30    December 31
- ---------------------------------------------------------------------------------------------------
                                                     (in thousands, except per share amounts)
                                                                       1999
                                               ----------------------------------------------------
                                                                                
Operating revenues                              $78,220      $56,039         $60,400        $85,737
Operating income                                $19,929       $1,541          $1,664        $12,924
Net income (loss)                                $9,132      $(1,704)        $(1,935)        $4,434
Basic and diluted earnings (loss) per share        $.37        $(.07)          $(.08)          $.18

                                                                       1998
                                               ----------------------------------------------------
Operating revenues                              $82,956      $56,334         $53,551        $73,464
Operating income (loss)                         $19,923     $(63,835)         $2,914        $12,047
Net income (loss)                                $9,072     $(42,058)        $(1,331)        $3,720
Basic and diluted earnings (loss) per share        $.37       $(1.70)          $(.05)          $.15
===================================================================================================



ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE

     There  have  been  no  changes  in or  disagreements  with  accountants  on
accounting and financial disclosure.

Part III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     The definitive  Proxy Statement to holders of the Company's Common Stock in
connection  with the  solicitation of proxies to be used in voting at the Annual
Meeting of  Shareholders on May 24, 2000 (the 2000 Proxy  Statement),  is hereby
incorporated  by reference  for the purpose of providing  information  about the
identification of directors.  Refer to the sections  "Election of Directors" and
"Security  Ownership  of  Directors,   Nominees,  and  Executive  Officers"  for
information concerning the directors.

     Information concerning executive officers is presented in Part I, Item 4 of
this Form 10-K.

                                       60


ITEM 11. EXECUTIVE COMPENSATION

     The 2000  Proxy  Statement  is hereby  incorporated  by  reference  for the
purpose of providing  information  about  executive  compensation.  Refer to the
section "Executive Compensation."

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

     The 2000  Proxy  Statement  is hereby  incorporated  by  reference  for the
purpose of providing  information about security ownership of certain beneficial
owners and  management.  Refer to the  sections  "Security  Ownership of Certain
Beneficial Owners" and "Security Ownership of Directors, Nominees, and Executive
Officers" for information about security  ownership of certain beneficial owners
and management.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The 2000  Proxy  Statement  is hereby  incorporated  by  reference  for the
purpose  of  providing  information  about  related  transactions.  Refer to the
section "Security Ownership of Directors,  Nominees, and Executive Officers" for
information about transactions with members of the Company's Board of Directors.

Part IV

ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

(a)  (1)  The  consolidated   financial   statements  of  the  Company  and  its
subsidiaries  and the report of independent  public  accountants are included in
Item 8 of this Report.

     (2) The  consolidated  financial  statement  schedules  have  been  omitted
because  they  are not  required  under  the  related  instructions,  or are not
applicable.

     (3) The exhibits listed on the accompanying Exhibit Index (pages 63 and 64)
are filed as part of, or incorporated by reference into, this Report.

(b) Reports on Form 8-K:
     A Current  Report on Form 8-K was filed on October 20, 1999,  referencing a
press release  issued on October 19, 1999,  announcing the sale of the Company's
Missouri utility assets to Atmos Energy for $32.0 million.

                                       61


SIGNATURES

     Pursuant  to the  requirements  of  Section  13 or 15(d) of the  Securities
Exchange Act of 1934,  the Registrant has duly caused the report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                                SOUTHWESTERN ENERGY COMPANY
                                                ---------------------------
                                                        (Registrant)

Dated: March 29, 2000                        BY:    /s/ Greg D. Kerley
                                                ---------------------------
                                                      Greg D. Kerley
                                                 Executive Vice President
                                                and Chief Financial Officer

     Pursuant to the  requirements of the Securities  Exchange Act of 1934, this
report  has  been  signed  below  by the  following  persons  on  behalf  of the
Registrant and in the capacities indicated on March 29, 2000.

   /s/ Harold M. Korell                  President, Chief Executive Officer
- ---------------------------              and Director
     Harold M. Korell

    /s/ Greg D. Kerley                   Executive Vice President
- ---------------------------              and Chief Financial Officer
     Greg D. Kerley

  /s/ Stanley T. Wilson                  Controller and Chief Accounting Officer
- ---------------------------
    Stanley T. Wilson

  /s/ Charles E. Scharlau                Director and Chairman
- ---------------------------
    Charles E. Scharlau

  /s/ Lewis E. Epley, Jr.                Director
- ---------------------------
   Lewis E. Epley, Jr.

/s/ John Paul Hammerschmidt              Director
- ---------------------------
  John Paul Hammerschmidt

   /s/ Robert L. Howard                  Director
- ---------------------------
    Robert L. Howard

   /s/ Kenneth R. Mourton                Director
- ---------------------------
     Kenneth R. Mourton

     Supplemental  Information  to be Furnished  With Reports Filed  Pursuant to
Section 15(d) of the Act by  Registrants  Which Have Not  Registered  Securities
Pursuant of Section 12 of the Act.

                                 Not Applicable

                                       62


EXHIBIT INDEX

   Exhibit
     No.                            Description
   -------                          -----------
    3.     Articles of Incorporation  and  Bylaws of the  Company  (amended  and
           restated  Articles of  Incorporation  incorporated  by  reference  to
           Exhibit 3 to Annual  Report on Form 10-K for the year ended  December
           31,  1993);  Bylaws of the  Company  (amended  Bylaws of the  Company
           incorporated  by reference to Exhibit 3 to Annual Report on Form 10-K
           for the year ended December 31, 1994).

    4.1    Amended and Restated  Rights  Agreement, dated  April 12, 1999 (filed
           herewith).


    4.2    Prospectus,  Registration  Statement,  and Indenture  on 6.70% Senior
           Notes due December 1, 2005 and issued December 5, 1995  (incorporated
           by reference to the  Company's  Forms S-3 and S-3/A filed on November
           1,  1995,  and  November  17,  1995,  respectively,  and  also to the
           Company's  filings  of a  Prospectus  and  Prospectus  Supplement  on
           November 22, 1995, and December 4, 1995, respectively).

    4.3    Prospectus  Supplement  and  Form  of   Distribution    Agreement  on
           $125,000,000 of Medium-Term Notes dated February 21, 1997 (Prospectus
           Supplement  incorporated  by reference to the  Company's  filing of a
           Prospectus  Supplement  on February  21, 1997,  Form of  Distribution
           Agreement  incorporated  by  reference  to  Exhibit 10 filed with the
           Company's Form 8-K dated February 21, 1997).

           Material Contracts:
   10.1    Gas Purchase Contract between SEECO,  Inc. and Associated Natural Gas
           Company,  dated  October 1, 1990,  and as amended  September 30, 1997
           (original contract  incorporated by reference to Exhibit 10 to Annual
           Report on Form 10-K for the year ended  December 31, 1990;  amendment
           incorporated  by reference  to Exhibit 10.2 to Annual  Report on Form
           10-K for the year ended December 31, 1997).

   10.2    Compensation Plans:
           (a) Summary of Southwestern  Energy  Company  Annual  and   Long-Term
               Incentive  Compensation  Plan,  effective  January  1,  1985,  as
               amended July 10, 1989  (replaced by  Southwestern  Energy Company
               Incentive Compensation Plan, effective January 1, 1993) (original
               plan  incorporated by reference to Exhibit 10 to Annual Report on
               Form 10-K for the year ended December 31, 1984;  first  amendment
               thereto  incorporated by reference to Exhibit 10 to Annual Report
               on Form 10-K for the year ended December 31, 1989).

           (b) Southwestern  Energy   Company   Incentive   Compensation   Plan,
               effective January 1, 1993, and Amended and Restated as of January
               1, 1999  (incorporated  by reference to Exhibit 10.2(b) to Annual
               Report on Form 10-K for the year ended December 31, 1998).

           (c) Nonqualified Stock Option  Plan, effective  February 22, 1985, as
               amended July 10, 1989  (replaced by  Southwestern  Energy Company
               1993 Stock  Incentive  Plan,  dated April 7, 1993) (original plan
               incorporated  by reference to Exhibit 10 to Annual Report on Form
               10-K  for  the  year  ended  December  31,  1985;   amended  plan
               incorporated  by reference to Exhibit 10 to Annual Report on Form
               10-K for the year ended December 31, 1989).

           (d) Southwestern  Energy  Company 1993  Stock  Incentive  Plan, dated
               April 7, 1993 and  Amended and  Restated as of February  18, 1998
               (incorporated by reference to Exhibit 10.2(d) to Annual Report on
               Form 10-K for the year ended December 31, 1998).

           (e) Southwestern Energy Company 1993 Stock Incentive Plan for Outside
               Directors,  dated April 7, 1993 (incorporated by reference to the
               appendix filed with the Company's  definitive  Proxy Statement to
               holders of the  Registrant's  Common Stock in connection with the
               solicitation  of  proxies  to be used  in  voting  at the  Annual
               Meeting of Shareholders on May 26, 1993).

                                       63


   Exhibit
     No.                            Description
   -------                          -----------
   10.3    Southwestern  Energy Company  Supplemental  Retirement Plan,  adopted
           May 31, 1989,  and Amended and Restated as of December 15, 1993,  and
           as further  amended  February  1, 1996  (amended  and  restated  plan
           incorporated  by reference  to Exhibit 10.5 to Annual  Report on Form
           10-K for the year ended December 31, 1993;  amendment  dated February
           1, 1996,  incorporated  by reference to Exhibit 10.5 to Annual Report
           on Form 10-K for the year ended December 31, 1995).

   10.4    Southwestern Energy Company Supplemental Retirement Plan Trust, dated
           December  30, 1993  (incorporated  by  reference  to Exhibit  10.6 to
           Annual Report on Form 10-K for the year ended December 31, 1993).

   10.5    Southwestern Energy Company Nonqualified  Retirement Plan,  effective
           October 4, 1995  (incorporated by reference to Exhibit 10.7 to Annual
           Report of Form 10-K for the year ended December 31, 1995).

   10.6    Employment and  Consulting Agreement for  Charles E. Scharlau,  dated
           May 21, 1998  (incorporated  by  reference  to Exhibit 10.9 to Annual
           Report on Form 10-K for the year ended December 31, 1998).

   10.7    Employment  Agreement for  Harold M. Korell, effective April 28, 1997
           (incorporated  by reference to Exhibit 10.15 to Annual Report on Form
           10-K for the year ended December 31, 1997).

   10.8    Form of Indemnity  Agreement,  between the  Company and  each officer
           and  director of the Company  (incorporated  by  reference to Exhibit
           10.20 to Annual  Report on Form 10-K for the year ended  December 31,
           1991).

   10.9    Form of Executive  Severance  Agreement for the Executive Officers of
           the Company,  effective  February 17, 1999 (incorporated by reference
           to  Exhibit  10.12 to Annual  Report on Form 10-K for the year  ended
           December 31, 1998).

   10.10   Omnibus  Project  Agreement  of   NOARK  Pipeline   System,   Limited
           Partnership  by  and  among  Southwestern  Energy  Pipeline  Company,
           Southwestern  Energy Company,  Enogex Arkansas Pipeline  Corporation,
           and Enogex Inc., dated January 12, 1998 (incorporated by reference to
           Exhibit  10.17 to  Annual  Report  on Form  10-K  for the year  ended
           December 31, 1997).


   10.11   Amended and Restated Limited Partnership  Agreement of NOARK Pipeline
           System,  Limited  Partnership dated January 12, 1998 and amended June
           18, 1998 (amended and restated agreement incorporated by reference to
           Exhibit  10.18 to  Annual  Report  on Form  10-K  for the year  ended
           December 31, 1997; first amendment thereto  incorporated by reference
           to  Exhibit  10.14 to Annual  Report on Form 10-K for the year  ended
           December 31, 1998).

   10.12   Asset Sale and  Purchase Agreement by  and among Southwestern  Energy
           Company,  Arkansas Western Gas Company and Atmos Energy  Corporation,
           dated October 15, 1999 (filed herewith).

   21.     Subsidiaries of the Registrant (incorporated  by reference to Exhibit
           21  to  Annual  Report  on Form 10-K  for the year ended December 31,
           1996).

   23.     Consent of Arthur Andersen LLP (filed herewith).

   27.     Financial Data Schedule for the  year ended December 31, 1999  (filed
           herewith).

                                       64