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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, 1998
                                            -----------------
                                                      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 $174,889,210 based on the New York Stock Exchange - Composite
Transactions closing price on March 29, 1999 of $7 1/8.

        The  number  of  shares  outstanding  as  of  March  29,  1999,  of  the
Registrant's Common Stock, par value $.10, was 24,933,280.

                       DOCUMENTS INCORPORATED BY REFERENCE

        Documents  incorporated  by reference and the Part of the Form 10-K into
which  the  document  is  incorporated:  (1)  Annual  Report to  holders  of the
Registrant's  Common  Stock for the year ended  December 31, 1998 - PARTS I, II,
and IV; and (2) 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 18, 1999 - PART III.
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                           SOUTHWESTERN ENERGY COMPANY
                                    FORM 10-K
                                  ANNUAL REPORT
                      For the Year Ended December 31, 1998



                                TABLE OF CONTENTS

                                     PART I
                                                                                                            Page
                                                                                                            ----
                                                                                                        
Item 1.    Business.......................................................................................    1
           Business Strategy..............................................................................    1
           Exploration and Production.....................................................................    1
           Natural Gas Distribution ......................................................................    7
           Marketing and Transportation...................................................................   11
           Other Items....................................................................................   14
Item 2.    Properties.....................................................................................   14
Item 3.    Legal Proceedings..............................................................................   16
Item 4.    Submission of Matters to a Vote of Security Holders............................................   18
           Executive Officers of the Registrant...........................................................   18

                                     PART II

Item 5.    Market for Registrant's Common Equity and Related Stockholder Matters..........................   19
Item 6.    Selected Financial Data........................................................................   20
Item 7.    Management's Discussion and Analysis of Financial Condition and Results of Operations..........   20
Item 7.A.  Quantitative and Qualitative Disclosure About Market Risks.....................................   20
Item 8.    Financial Statements and Supplementary Data....................................................   22
Item 9.    Changes in and Disagreements with Accountants on Accounting and Financial Disclosure...........   22

                                    PART III

Item 10.   Directors and Executive Officers of the Registrant.............................................   22
Item 11.   Executive Compensation.........................................................................   23
Item 12.   Security Ownership of Certain Beneficial Owners and Management.................................   23
Item 13.   Certain Relationships and Related Transactions.................................................   23

                                     PART IV

Item 14.   Exhibits, Financial Statement Schedules, and Reports on Form 8-K...............................   23




                                     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
organized in 1929 as a local gas distribution company in northwest Arkansas. The
Company is incorporated under the laws of the state of Arkansas and is an exempt
holding  company under the Public Utility  Holding  Company Act of 1935.  Today,
Southwestern 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, south Louisiana, and
         the Gulf Coast.
     2.  Natural Gas Distribution -- Engaged in the gathering,  distribution and
         transmission  of natural  gas to  approximately  179,000  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.

                                Business Strategy

     The Company's  business  strategy is to provide  long-term  growth  through
focused  exploration  and  production  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 in New Mexico, and high potential  exploration
opportunities in south Louisiana and the Gulf Coast.  Additionally,  the Company
strives to operate its utility  systems safely and  efficiently  and to position
them to earn their full,  authorized  return.  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 requirements.  Since that time, the Company's
exploration  and   development   activities   outside   Arkansas  have  expanded
substantially.

                                       1


     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.   Another   major  part  of  this   segment's
restructuring   was  the   reorganization   into  asset  management  teams.  Two
exploitation    teams   were    formed   (an   Arkoma   team   and   a   Permian
Basin/Mid-Continent/Gulf   Coast  team)  to  manage   Southwestern's   producing
properties,  and three  exploration  teams (Permian Basin,  Texas Gulf Coast and
south  Louisiana)  were formed to provide an area specific  focus in exploration
projects. A new incentive  compensation system was also put in place in 1998 for
the professional staff which aligns our employees' efforts with the interests of
our  shareholders,  while  fostering a culture that is innovative and focused on
growth as well as profitability.

     At December 31, 1998,  the Company had proved oil and gas reserves of 344.8
billion cubic feet (Bcf)  equivalent,  including  proved natural gas reserves of
303.7 Bcf and proved oil reserves of 6,850 thousand barrels (MBbls).  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 89% of total
operating revenues for this segment in 1998, 86% in 1997, and 90% in 1996.

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  December 31, 1998  information  as to proved
reserves,  well count, and gross and net acreage, and 1998 annual information as
to production  and reserve  additions for each of the Company's  core  operating
areas.




                               Arkoma  Mid-Continent  Permian  Gulf Coast   Total
                              -------  -------------  -------  ----------  -------
                                                               
Proved Reserves:
  Gas (Bcf)                     214.9        33.7       27.8        27.3     303.7
  Oil (MBbls)                      -        2,242      3,532       1,076     6,850
  Total Reserves (Bcfe)         214.9        47.1       49.0        33.8     344.8

Production (Bcfe)                20.7         6.7        4.7         4.8      36.9
Reserve Additions (Bcfe)         22.9         2.7       19.2         2.7      47.5
Total Gross Wells                 818       1,414        362          68     2,662
  Percent Operated                48%         37%        59%         41%       45%
Gross Acreage                 336,664     137,107     63,610     141,640   679,021
Net Acreage                   269,715      50,786     29,281      62,797   412,579



                                       2


     Arkoma.  Southwestern has been active in the Arkansas portion of the Arkoma
Basin since 1943. As a result,  it has developed a substantial  acreage position
and  reserve  base  in  the  basin.  At  December  31,  1998,  the  Company  had
approximately  214.9 Bcf of  natural  gas  reserves  in the Arkoma  Basin.  This
represents  71% of the Company's  natural gas reserves and 62% of total reserves
on a Bcf equivalent basis.  Southwestern's  average net daily production in 1998
in the Arkoma Basin was 56.9 million cubic feet equivalent (MMcfe).

     Historically,  Southwestern has conducted its Arkansas development drilling
program  primarily  within the boundaries of its utility  gathering  system.  In
1997,  the Company  accelerated  the  extension of its Arkoma  drilling  program
outside  of  its  traditional  operating  areas  to  new  fields.  During  1998,
Southwestern   enjoyed  successful  stepout  drilling  in  the  lightly-explored
southern  edges of the Arkoma  Basin in Arkansas  and in the western part of the
basin in Oklahoma.  Overall,  the Company  participated  in 52 gross wells (23.6
net) in the Arkoma  Basin during 1998 with a success  ratio of 83%.  These wells
contributed 22.9 Bcf to total 1998 reserve additions.  During 1999, Southwestern
plans to continue to capitalize on its geological experience in the Arkoma Basin
and increase its emphasis on  development  drilling  outside of the  traditional
Arkansas fairway.

     Mid-Continent.  The  Company's  activities  in this  region  are  primarily
focused on the Anadarko Basin of Oklahoma. At December 31, 1998, the Company had
approximately  33.7 Bcf of natural gas  reserves and 2,242 MBbls of oil reserves
in the region,  representing 11% and 33%,  respectively,  of the Company's total
gas and oil reserves.  Average net daily  production in 1998 for this region was
18.2 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.

     Permian. In recent years, Southwestern has experienced excellent success in
the lower and middle  Morrow  formations  in the Permian  Basin in southeast New
Mexico. At December 31, 1998, the Company had approximately  27.8 Bcf of natural
gas reserves and 3,532 MBbls of oil reserves in the region,  representing 9% and
51%,  respectively,  of the Company's  total gas and oil  reserves.  Average net
daily production in 1998 for this region was 12.9 MMcfe.

     Since its first  exploratory  discovery  in 1995,  the  Company's  drilling
program  in this  area  has  resulted  in 21  successful  wells  of 26  drilled.
Continued development of our Gaucho unit, in which the Company has approximately
a 50% working interest,  resulted in reserve additions of 13.2 Bcf equivalent in
1998. The Rio Blanco #4-1,  located two miles from existing  Gaucho  production,
was  recently  completed  and could  extend the Gaucho field and lead to further
development.  Five wells have been  drilled  within  the  Gaucho  prospect  and,
including the Rio Blanco #4-1, four are producing at a combined daily gross rate
of 21.1 MMcf of natural gas and 137 barrels of condensate.  The Company believes
that its drilling activities in this area will provide additional  opportunities
for growth in production and reserves.

     Gulf Coast/South Louisiana. The Company became active in the Gulf Coast and
south   Louisiana  areas  in  1990.  At  December  31,  1998,  the  Company  had
approximately  27.3 Bcf of natural gas  reserves and 1,076 MBbls of oil reserves
in the region, representing 9% and 16%, respectively, of the Company's total gas
and oil reserves.  Average net daily production in 1998 for this region was 13.1
MMcfe. Southwestern considers this region to be a primary area for growth in the
Company's production and reserves.

                                       3


     South  Louisiana  continues  to be the  major  focus  area of  high  impact
exploration  activities.  In 1998, the Company used its growing inventory of 3-D
seismic  data  and  leasehold   acreage  to  create  the  largest  inventory  of
exploration  prospects in the Company's  history.  Drilling  began in the fourth
quarter of 1998 with four wells spud to date.  Two of these wells are  currently
drilling  and two test wells were dry,  demonstrating  the higher risk nature of
south  Louisiana exploration.  The Company  anticipates  additional  drilling in
this area in 1999.

     Over the past several years,  the Company has built an extensive  inventory
of 3-D seismic  data  covering  almost 550 square miles in south  Louisiana.  In
1998,  the  Company  continued  to  analyze  the  seismic  data  from  the  East
Atchafalaya  and Boure 3-D shoots with promising  results.  Southwestern  became
involved in the East  Atchafalaya  project in mid-1995  through a joint  venture
with Union Pacific Resources. The joint venture has acquired 113 square miles of
3-D seismic data covering portions of St. Martin and Iberia Parishes, Louisiana.
The Company has  participated  in four wells to date in the  project.  While two
wells did not find commercially  productive  reserves,  the other two wells were
completed as producing wells. Additional wildcat drilling is planned in 1999.

     Southwestern has a 50% working interest in the Boure project,  a 185 square
mile 3-D survey in Assumption  Parish adjacent to the East  Atchafalaya  project
area.  The  acquisition  phase  is  complete  and the  data is  currently  being
interpreted.  The  Company  expects  to drill up to two wells in the  project in
1999.

     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.  The
survey  covers  a  140-square  mile  area  that  contains   several   identified
exploration  leads,  and provides 3-D data over the Bosco  producing field which
the Company  purchased  in 1995.  The 3-D data is expected  to be  delivered  in
October 1999 with drilling to commence in the year 2000.

     The Texas transition zone represents a new focus area for Southwestern, and
covers the  onshore  Texas  coast and the Texas state  waters.  Southwestern  is
currently  developing  the  regional  geologic  mapping  necessary  to tie these
distinct  geological  areas together.  In 1999, the Company plans to drill up to
four  prospects and has  developed  several more leads as it continues to add to
its existing  acreage.  The Company  believes that this area has been relatively
under-explored,  as compared to the  federal  waters of the Gulf of Mexico,  and
expects it to be a meaningful source of new drilling opportunities.

     The higher risk, higher return exploratory prospects in south Louisiana and
the Gulf Coast are part of the  Company's  overall  strategy of balanced oil and
gas exploration and production.  These high impact  exploration plays provide an
opportunity  for  significant  reserve  growth,  while the  low-risk  Arkoma and
medium-risk  Permian  drilling  activities  provide a stable base of  continuing
reserve additions and production.

Acquisitions

     Prior to 1997,  the Company had increased its emphasis on  acquisitions  of
producing  properties.  However,  in 1997,  the  market for  producing  property
acquisitions became demand-driven  causing existing properties to sell at higher
prices as compared to historical  levels. As a result,  the Company did not make
any producing property  acquisitions in 1998 or 1997,  compared to $45.8 million
spent in 1996,  $6.0  million  spent in 1995,

                                       4


and $13.9 million in 1994. The Company  acquired  approximately  32.7 Bcf of gas
and 6,350 MBbls of oil during  1996,  4.5 Bcf of gas and 851 MBbls of oil during
1995,  and  20.6  Bcf of gas and  1,038  MBbls  of oil  during  1994.  The  1996
acquisitions  were primarily in Texas and Oklahoma,  the 1995  acquisitions were
primarily  in the  Gulf  Coast  areas  of  Louisiana  and  Texas,  and the  1994
acquisitions  were  primarily in the Anadarko  Basin of Oklahoma.  The Company's
current  strategy in this area is to pursue  selective  acquisitions  that would
complement its existing operations.

Capital Spending

     Southwestern  began 1999 with planned capital  expenditures for gas and oil
exploration and development of $56.6 million, up from $52.4 million in 1998. The
Company  plans  to  maintain  its  capital  investments  within  the  limits  of
internally  generated cash flow, and will adjust its capital program accordingly
if commodity prices remain at their current low levels.

Sales and Major Customers

     Natural gas equivalent  production  averaged 101 million cubic feet per day
(MMcfd)  in 1998,  compared  to 104 MMcfd in 1997,  and 101  MMcfd in 1996.  The
Company's gas production  was 32.7 Bcf in 1998,  down from 33.4 Bcf in 1997, and
34.8 Bcf in 1996.  The Company  also  produced  703,000  barrels of oil in 1998,
compared to 749,000  barrels in 1997, and 391,000 barrels in 1996. The decreases
in gas  production  were the result of lower sales from the  Company's  Arkansas
properties,  which are largely affected by the demands of the Company's  utility
distribution systems.

     The Company's natural gas production  received an average wellhead price of
$2.34 per thousand  cubic feet (Mcf) in 1998,  compared to $2.57 per Mcf in 1997
and $2.26 per Mcf in 1996. Oil prices  declined  significantly,  with an average
price in 1998 of $13.60 per  barrel,  compared  to $19.02 per barrel in 1997 and
$21.21 per barrel in 1996.

     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 36% of total  exploration and production  revenues in 1997, 43% in
1997, and 46% in 1996. All of the Company's  remaining sales are to unaffiliated
purchasers.

     SEECO's  production  was 19.5 Bcf in 1998,  down  from 21.7 Bcf in 1997 and
23.1 Bcf in 1996.  SEECO's sales to Arkansas Western were 11.3 Bcf in 1998, down
from 14.3 Bcf in 1997 and 16.3 Bcf in 1996.  The  decreases  in 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  7.7 Bcf in 1998,  8.6 Bcf in 1997,  and 10.1 Bcf in 1996.
Through these sales,  SEECO  furnished 59% of the  northwest  Arkansas  system's
requirements  in  1998,  64% in  1997,  and 62% in 1996.  SEECO  also  delivered
approximately  2.0 Bcf in 1998, 1.0 Bcf in 1997, and 1.1 Bcf in 1996 directly to
certain large business customers of AWG through a transportation  service of the
utility  subsidiary.  Most of the sales to AWG were  pursuant  to a  twenty-year
contract  between  SEECO and AWG,  entered  into in July  1978,  under which the
price was frozen

                                       5


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 hereafter referred to as the "Gas Cost Settlement." The sales
price under this contract  averaged  $2.99 per thousand cubic feet (Mcf) through
November  of  1998,  $3.46  per Mcf in 1997,  and  $3.13  per Mcf in 1996.  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 Arkansas Public Service
Commission (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
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 NorAm  East Index plus a
demand charge.  The volumes of gas projected to be sold under these contracts in
their first year are  approximately  equal to the historical annual volumes sold
under the expired  long-term  contracts.  However,  the volumes to be sold under
these contracts are not fixed as they were under the expired contract. The total
premium  over the NorAm 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.  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 3.6 Bcf in 1998,  5.7 Bcf in 1997, and 6.2
Bcf in 1996. These deliveries  accounted for  approximately  50% of Associated's
total  requirements  in 1998,  61% in 1997,  and 62% in 1996.  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. The sales price under this contract was $2.20 per Mcf for the contract
period ended  September 30, 1995,  $1.785 per Mcf for the contract  period ended
September 30, 1996, and $2.225 per Mcf for the contract  period ended  September
30, 1997. 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 sales price under the  contract  averaged  $2.37 for 1998
compared to $2.51 for 1997.

     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 is also  affected by the demand of the utility
for production on its gathering system. SEECO's sales to

                                       6


unaffiliated purchasers accounted for approximately 19% of total exploration and
production revenues in 1998, 15% in 1997, and 14% in 1996.

     The combined gas production of SEPCO and Diamond M was 13.2 Bcf in 1998, up
from 11.7 Bcf in 1997 and 1996. Oil  production was 703 MBbls in 1998,  compared
to 749 MBbls in 1997, and 391 MBbls in 1996. 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 43% of total
exploration and production revenues in 1998 and 1997, and 40% in 1996.

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  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 state of Arkansas 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  Arkansas  and its
long-time  presence and  reputation in this area,  the Company  believes it will
continue to be successful in acquiring  new leases in Arkansas.  While  improved
intrastate and interstate  pipeline  transportation  in Arkansas 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 APSC and the Missouri Public Service Commission (MPSC)
regulate  the  Company's  utility  rates  and  operations.  The  Company  serves
approximately  179,000  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  110,000  customers  in
northwest Arkansas. The Associated division receives its gas from transportation
pipelines  and delivers the gas through its own  transmission  and  distribution
systems,  ultimately  delivering it at retail to approximately  69,000 customers

                                       7


primarily in northeast Arkansas and southeast Missouri.  Associated,  formerly a
wholly-owned  subsidiary of Arkansas Power and Light  Company,  was acquired and
merged into Arkansas Western effective June 1, 1988.

Gas Purchases and Supply

     AWG purchases its system gas supply through a competitive  bidding  process
implemented in late 1998 and directly at the wellhead under long-term contracts.
As  previously  indicated,  SEECO  furnished  approximately  59% of AWG's system
requirements in 1998, 64% in 1997, and 62% in 1996.

     As discussed above in "Exploration and Production,"  AWG's  twenty-year gas
supply contract with SEECO expired in July 1998. Supplies previously provided by
this  contract are now  obtained  through a  competitive  bidding  process.  The
Company's subsidiaries successfully bid on five of the seven gas supply packages
available  and  will  provide  approximately  the  same  volume  to AWG that has
historically been provided, but at a reduced premium.

     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.

     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.

                                       8



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  157,000  residential,  22,000 commercial,  and 300
industrial  customers,  while also  providing  gas  transportation  services  to
approximately  50  end-use  and  off-system  customers.  The  utility's  service
territory includes northwest Arkansas, which in 1998 was the 8th fastest growing
region in the United States. The population in Washington and Benton counties in
northwest  Arkansas has grown at an annual rate of 3.5 percent  since 1990,  and
the total population of the two-county area is projected to be nearly 300,000 by
the year 2000.  Total gas throughput in 1998 was 32.8 Bcf, down from 37.0 Bcf in
1997, and 39.0 in 1996. The decreases  were the result of  comparatively  warmer
weather  during the heating season in 1998 and 1997.  Off-system  transportation
volumes were 1.1 Bcf in 1998,  compared to 2.8 Bcf  transported in 1997, and 3.6
Bcf transported in 1996.

     Residential and Commercial. Approximately 80% of the utility's revenues are
from residential and commercial  markets.  Residential and commercial  customers
combined  accounted  for 57% of total gas  throughput  for the gas  distribution
segment in 1998, 1997, and 1996. Gas volumes sold to residential  customers were
11.1 Bcf, down from 12.6 Bcf sold in 1997,  and 13.4 Bcf sold in 1996.  Gas sold
to commercial  customers totaled 7.6 Bcf in 1998, down from 8.4 Bcf in 1997, and
8.8 Bcf in 1996.  The decrease in gas volumes sold in 1998 was due to weather in
Arkansas Western's service territory that was 16% warmer than in 1997.

     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  recently  as tariffs  implemented  in  Arkansas  as a result of the
recently approved rate filings 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 13.0 Bcf in gas deliveries in 1998, 13.2 Bcf in 1997,
and  13.0 Bcf in 1996.  No  industrial  customer  accounts  for more  than 4% of
Arkansas Western's total throughput.

     In an effort  to more  fully  meet the  service  needs of  larger  business
customers,  both AWG and Associated instituted a transportation  service in 1991
that allows such customers in Arkansas to obtain their own gas supplies directly
from other  suppliers.  A total of 40 customers are currently using the Arkansas
transportation  service. AWG's seventeen largest customers in northwest Arkansas
are using the  transportation  service.  Associated's  four largest customers in
northeast  Arkansas and eight of Associated's  eleven largest Missouri customers
are currently using transportation service.

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

                                       9


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  customer's
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.

     In the recent past,  changes at the federal level have brought  significant
changes   to  the   regulatory   structure   governing   interstate   sales  and
transportation of natural gas. The Federal Energy Regulatory Commission's (FERC)
Order No. 636 series  changed a major  portion of the gas  acquisition  merchant
function provided to gas distributors by interstate  pipelines.  AWG obtains its
supply through competitive bids from suppliers and at the wellhead directly from
producers and has not been directly  impacted by Order No. 636.  Associated  has
acquired the bulk of its gas supply at the  wellhead  since its  acquisition  by
Arkansas  Western,  but  continued  until Order No. 636 to purchase a portion of
both its peak and base  requirements  from  interstate  suppliers.  The  changes
mandated by Order No. 636 placed the  responsibility for arranging firm supplies
of natural gas directly on local distribution companies.

     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  evaluating issues
such as system capacity and  reliability,  obligation to serve, and rate design,
with an eye toward minimizing any stranded or transition costs.

     In Arkansas,  the state  legislature is now  considering  legislation  that
would  deregulate the retail sale of electricity in Arkansas as soon as 2002. At
this time, it is unknown whether or not such  legislation  will be adopted or if
it is  adopted,  what its final  form will be.  The  Company  is also  unable to
predict the precise impact of any such  legislation  on its utility  operations.
The Company's utility subsidiary has historically maintained

                                       10


a substantial price advantage over electricity for most  applications.  However,
if 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.  If electric
deregulation occurs in Arkansas, legislative or regulatory precedents may be set
that would 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 both customer
growth and rate increases  allowed by regulatory  commissions.  In recent years,
AWG  has  experienced  customer  growth  of  approximately  3%  annually,  while
Associated has experienced  customer growth of approximately 1% annually.  Based
on current economic conditions in the Company's service territories, the Company
expects this trend in customer growth to continue. AWG and Associated pass along
to customers  through an automatic cost of gas adjustment clause any increase or
decrease  experienced  in purchased gas costs.  In December  1996,  AWG received
approval from the APSC for a rate increase of $5.1 million annually. 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.

                          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
Company  presently  plans to  continue  to  expand  its  natural  gas  marketing
activities,   with   particular   emphasis  on  third-party   marketing  in  the
Mid-Continent region of the United States. 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 $1.8 million in 1998 and $1.3  million in 1997.  This segment had an
operating loss of $.5 million in 1996. The segment  marketed 49.6 Bcf of natural
gas in 1998,  compared to 36.2 Bcf in 1997,  and 13.0 Bcf in 1996.  Of the total
volumes  marketed,  purchases  from the  Company's  exploration  and  production
subsidiaries accounted for 25% in 1998, 23% in 1997, and 56% in 1996.

                                       11


NOARK Pipeline

     At December 31, 1998, 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 $3.1 million in 1998,  $4.5 million in 1997, and $3.8
million in 1996.

     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 Federal  Energy  Regulatory  Commission  (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  rationale  behind the merger of the two  pipelines  was simple:  NOARK
Pipeline  standing alone did not have the access to gas supply necessary to make
the pipeline  system  economically  viable.  The merged  pipeline system now has
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  significantly
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. In 1998, NOARK Pipeline had an
average  daily  throughput  of 27.3  million  cubic feet of gas per day  (MMcfd)
before the integration with Ozark,  compared to average daily throughput of 39.8
MMcfd in 1997, and 57.5 MMcfd in 1996.  After the  integration in November 1998,
Ozark Pipeline had an average daily  throughput of 184.6 MMcfd.  At December 31,
1998,  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.

                                       12


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 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'   role  as  wholesalers  of  natural  gas  and  has
substantially   increased  competition  in  natural  gas  markets.   While  some
regulatory uncertainty remains, Order No. 636 may ultimately enhance the ability
of the  Company to market  natural  gas,  although  it may also  create  greater
competition for the Company.

     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.

                                       13


                                   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  160 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 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,  1998,  the  Company  had 706  employees,  98 of whom are
represented under a collective bargaining  agreement.  The Company believes that
its relations with its employees are good.

Item 2.    Properties

     The portions of the Registrant's 1998 Annual Report to Shareholders  (filed
as Exhibit 13 to this filing) listed below are hereby  incorporated by reference
for the purpose of describing its properties.

     Refer to the  Appendix  (filed as a part of Exhibit 13 to this  filing) for
information  concerning areas of operation of the Company's  business  segments.
Also, see pages 35-38 (Notes 5 and 6 to the financial statements) for additional

                                       14


information  about  the  Company's  gas  and  oil  operations.  For  information
concerning  capital  expenditures,  refer  to  page 23  ("Capital  Expenditures"
section of  "Management's  Discussion  and Analysis of Financial  Condition  and
Results  of  Operations").  Also  refer  to page 47  ("Financial  and  Operating
Statistics")  for  information  concerning  gas and oil produced.  The following
table  provides  information  concerning  miles  of  pipe of the  Company's  gas
distribution systems.




                                    AWG    Associated   Total
                                   -----   ----------   -----
                                               
   Gathering                         390          -       390
   Transmission                      806        608     1,414
   Distribution                    3,088      1,674     4,762
                                   -----      -----     -----
                                   4,284      2,282     6,566
                                   =====      =====     =====



The following  information is provided to supplement  that presented in the 1998
Annual Report to Shareholders:




Leasehold Acreage
                                   Undeveloped               Developed
                                 Gross      Net           Gross      Net
                                -----------------        -----------------
                                                         
 Arkoma......................   141,529   124,048        195,135   145,667
 Mid-Continent...............    38,127    16,867         98,980    33,919
 Permian.....................    19,190    13,500         44,420    15,781
 Gulf Coast..................    53,340    29,593         88,300    33,204
                                -----------------        -----------------
                                252,186   184,008        426,835   228,571
                                =================        =================






Producing Wells
                                    Gas                   Oil                  Total
                               Gross    Net          Gross    Net          Gross     Net
                               -------------         -------------         ---------------
                                                                  
 Arkoma......................    818   422.5            -       -            818     422.5
 Mid-Continent...............    497   199.9           917   305.8         1,414     505.7
 Permian.....................     17     6.1           345   218.3           362     224.4
 Gulf Coast..................     35    14.2            33    24.8            68      39.0
                               -------------         -------------         ---------------
                               1,367   642.7         1,295   548.9         2,662   1,191.6
                               =============         =============         ===============



                                       15





Net Wells Drilled During the Year

                                   Exploratory

                                   Productive
              Year                    Wells     Dry Holes   Total
              ----                 ----------   ---------   -----
                                                    
              1998................      .5         3.9       4.4
              1997................     1.3         3.0       4.3
              1996................     5.3         3.0       8.3





                                   Development

                                   Productive
              Year                    Wells     Dry Holes   Total
              ----                 ----------   ---------   -----
                                                       
              1998................    29.4         6.4       35.8
              1997................    27.5        13.5       41.0
              1996................    29.4        11.8       41.2






Wells in Progress as of December 31, 1998

              Type of Well                            Gross   Net
              ------------                            -----   ---
                                                         
              Exploratory............................   5.0   1.1
              Development............................  12.0   4.0
                                                       ----   ---

              Total..................................  17.0   5.1
                                                       ====   === 



     No individually  significant  discovery or other major favorable or adverse
event has occurred since December 31, 1998.

     During 1998,  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 the 1998 Annual Report to  Shareholders.
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.

Item 3.    Legal Proceedings

      In May 1996,  a class  action  suit was filed  against  the Company in the
Circuit Court of Sebastian County, Arkansas 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

                                       16


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 in the  amount of $102.5  million  (verdict  amount  plus
pre-judgment  interest and one year 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  substantial  grounds for a
successful  appeal. The Company has obtained a temporary stay of the judgment on
the jury's verdict and has filed and will vigorously  prosecute an appeal in the
Arkansas  Supreme Court. 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.

      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 material,  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.

      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   material,   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.

      In 1997, the Company's subsidiary,  Southwestern Energy Production Company
(SEPCO),  filed suit 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. The

                                       17


consultant's primary cause of action relates to a claim that he is contractually
entitled to a 25% interest in the Boure' project, one of SEPCO's south Louisiana
exploration  projects.  The  counterclaim  alleges  seven  different  claims for
relief, including breach of contract, fraud, and defamation and requests damages
in excess of  $10,000,000  for each  claim  plus  punitive  damages in excess of
$10,000,000.  The Company  feels these  claims are without  merit and intends to
vigorously  contest  them.   Although  the  total  amount  of  these  claims  is
significant in the aggregate,  management believes,  based on its investigation,
that the  Company's  ultimate  liability,  if any,  will not be  material to its
consolidated financial position or results of operation.

      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, 1998, to a vote of security holders, through the solicitation
of proxies or otherwise.




                               Executive Officers of the Registrant
                                                                                         Years Served as
       Name                              Officer Position                        Age         Officer
       ----                              ----------------                        ---         -------
                                                                                      
Harold M. Korell       President and Chief Executive Officer and                  54            2
                       Director

Greg D. Kerley         Senior Vice President and Chief Financial Officer          43            9

Alan H. Stevens        Senior Vice President, Southwestern Energy Production      54            1
                       Company and SEECO, Inc.

Debbie J. Branch       Senior Vice President, Southwestern Energy Services        47            3
                       Company and Southwestern Energy Pipeline Company

Charles V. Stevens     Senior Vice President, Arkansas Western Gas Company        49           10



     Mr.  Korell was  appointed  to his  present  position  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.

                                       18


     Mr. Kerley was appointed to his present position in July 1998.  Previously,
he served as 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. Alan  Stevens  joined the  Company in his  present  position in January
1998. Prior to joining the Company, he was President and Chief Operating Officer
for Petsec  Energy  during  1997.  Previously,  he was  employed  by  Occidental
Petroleum Company from 1989 to 1997 where he was most recently Vice President of
Worldwide Exploration.

     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 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.


                                     PART II

Item 5.    Market for Registrant's Common Equity and Related Stockholder Matters

     Shareholder  Information on page 48 and "Common Stock Statistics"  included
in the  Company's  Financial  and  Operating  Statistics  on page 46 of the 1998
Annual  Report  to  Shareholders  are  hereby   incorporated  by  reference  for
information  concerning the market for and prices of the Company's Common Stock,
the number of shareholders, and cash dividends paid.

     The terms of  certain  of the  Company's  long-term  debt  instruments  and
agreements impose restrictions on the payment of cash dividends. At December 31,
1998,  $92.5  million of retained  earnings  was  available  for payment as 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.  Dividends totaling $6.0 million were paid during 1998.

     The Company paid  dividends at an annual rate of $.24 per share in 1998 and
1997.  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.

                                       19


Item 6.    Selected Financial Data

     Pages 46 and 47 ("Financial  and Operating  Statistics") of the 1998 Annual
Report to Shareholders are hereby incorporated by reference.

Item 7. Management's  Discussion and Analysis of Financial Condition and Results
        of Operations, and

     The text on pages 17 through 25  ("Management's  Discussion and Analysis of
Financial  Condition  and Results of  Operations")  of the 1998 Annual Report to
Shareholders is hereby incorporated by reference.

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
4% of accounts  receivable.  See the discussion of credit risk  associated  with
commodities trading below.

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, 1998 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, 1998.

                                       20





                                                                                              Fair
                                                                                              Value
                                               Expected Maturity Date                       12/31/98
                             -----------------------------------------------------------    --------
                             1999    2000    2001    2002    2003    Thereafter    Total
                             ----    ----    ----    ----    ----    ----------    -----    
                                                   ($ in millions)

                                                                     
   Fixed Rate                $1.5      -      $2.0    $2.0    $2.0      $241.0     $248.5    $257.3
   Average Interest Rate     8.86%     -      9.36%   9.36%   9.36%       7.19%      7.25%

   Variable Rate              -        -     $20.0   $14.9      -          -        $34.9     $34.9
   Average Interest Rate      -        -      5.33%   5.55%     -          -         5.42%



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),  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 "Fair Value" represents values for the same contracts
using comparable market prices at December 31, 1998. The net difference  between
the contract amounts and fair value amounts of the contracts was $8.2 million at
December 31, 1998.

                                       21




                                                          Expected Maturity Date                            
                                          ------------------------------------------------------
                                                1999               2000               2001
                                                ----               ----               ----
                                          Carrying   Fair    Carrying   Fair    Carrying   Fair
                                           Amount    Value    Amount    Value    Amount    Value
                                          --------   -----   --------   -----   --------   -----
                                                                         
   Natural Gas:
   Swaps with a fixed price receipt
      Contract volume (Bcf)                  10.1                -                  -
      Weighted average price per Mcf        $2.40                -                  -
      Contract amount (in millions)         $24.3    $29.4       -        -         -        -

   Swaps with a fixed price payment
      Contract volume (Bcf)                   1.4                -                  -
      Weighted average price per Mcf        $2.25                -                  -
      Contract amount (in millions)          $3.1     $2.6       -        -         -        -

   Basis swaps
      Contract volume (Bcf)                   6.4                -                  -
      Weighted average basis difference   
         per Mcf                            $.095                -                  -
      Contract amount (in millions)           $.6      $.4       -        -         -        -

   Oil:
   Price floor
      Contract volume (MBbls)                 375                350                325
      Weighted average price per Bbl       $18.00             $18.00             $18.00
      Contract amount (in millions)          $6.8     $8.6      $6.3    $7.5       $5.9    $6.7



Item 8.    Financial Statements and Supplementary Data

     Pages 27 through 47 of the 1998 Annual  Report to  Shareholders  are hereby
incorporated by reference.

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 18, 1999 (the 1999 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.

                                       22


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

Item 11.   Executive Compensation

     The 1999  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 1999  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 1999  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 following consolidated financial statements of the Company and its
subsidiaries,  included  on pages 27  through  45 of its 1998  Annual  Report to
Shareholders and the report of independent public accountants on page 26 of such
report are hereby incorporated by reference:
           Report of Independent Public Accountants.

           Consolidated Balance Sheets as of December 31, 1998 and 1997.

           Consolidated  Statements  of Income for the years ended  December 31,
           1998, 1997, and 1996.

           Consolidated  Statements  of Cash Flows for the years ended  December
           31, 1998, 1997, and 1996.

           Consolidated  Statements  of  Retained  Earnings  for the years ended
           December 31, 1998, 1997, and 1996.

           Notes to Consolidated Financial Statements,  December 31, 1998, 1997,
           and 1996.

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

                                       23


      (3)  The exhibits listed on the accompanying Exhibit Index (pages 26 - 28)
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  16,  1998,
           referencing a press release issued that day announcing the verdict of
           a state  court jury in a class  action  royalty  lawsuit  against the
           Company and two of its subsidiaries.

                A  Current  Report on Form 8-K was filed on  October  30,  1998,
           referencing a press release issued  October 29, 1998,  announcing the
           appointment  by the Company's  Board of Directors of Harold Korell to
           replace Charles E. Scharlau as Chief Executive Officer of the Company
           effective  January  1,  1999.  Mr.  Korell  was also  elected  to the
           Company's Board of Directors effective immediately.

                                       24


                                   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 26, 1999                        BY:      /s/ GREG D. KERLEY
                                                 -------------------------------
                                                          Greg D. Kerley
                                                       Senior 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 26, 1999.


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

       /s/ GREG D. KERLEY                Senior 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

                                       25


                                  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    Shareholder   Rights   Agreement,  dated  May 5,  1989  (incorporated by
        reference  to  Exhibit 1 filed  with the  Company's  Form 8-K on May 10,
        1989).

 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 (amended and restated plan filed herewith).

        (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).

                                       26


Exhibit
  No.                              Description
- -------                            -----------

        (d)    Southwestern  Energy  Company 1993 Stock  Incentive  Plan,  dated
               April 7, 1993 and  Amended and  Restated as of February  18, 1998
               (amended and restated plan filed herewith).

        (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).

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    Split-Dollar  Life Insurance  Agreement for Stanley D. Green,  effective
        February 1, 1996  (incorporated  by  reference to Exhibit 10.8 to Annual
        Report on Form 10-K for the year ended December 31, 1995).

10.7    Executive Severance Agreement for Charles E. Scharlau,  effective August
        4, 1989  (incorporated  by reference  to Exhibit 10 to Annual  Report on
        Form 10-K for the year ended December 31, 1989).

10.8    Executive Severance Agreement for Stanley D. Green,  effective August 4,
        1989  (incorporated  by reference to Exhibit 10 to Annual Report on Form
        10-K for the year ended December 31, 1989).

10.9    Employment and  Consulting  Agreement for Charles E. Scharlau, dated May
        21, 1998 (filed herewith).

10.10   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).

10.11   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).

10.12   Form of Executive Severance Agreement for the Executive  Officers of the
        Company, effective February 17, 1999 (filed herewith).

10.13   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).

                                       27


Exhibit
  No.                              Description
- -------                            -----------

10.14   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 filed herewith).

13.     1998  Annual  Report to  Shareholders,  except  for those  portions  not
        expressly incorporated by reference into this Report. Those portions not
        expressly  incorporated by reference are not deemed to be filed with the
        Securities  and  Exchange  Commission  as  part of  this  Report  (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).

27.     Financial  Data  Schedule  for the year  ended December 31, 1998  (filed
        herewith).

                                       28