<ARTICLE> UT
<LEGEND>
This schedule contains summary financial information extracted from the
Balance Sheets, Income Statements and Statements of Cash Flows for the
fiscal year 1997 and is qualified in its entirety by reference to
such financial statements.
</LEGEND>
<RESTATED> 
       
                                                                                            
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997             DEC-31-1997
<BOOK-VALUE>                                  PER-BOOK                PER-BOOK                PER-BOOK                PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                     75314310                76180847                76766578                77787816
<OTHER-PROPERTY-AND-INVEST>                   23225413                23286176                24062505                24812830
<TOTAL-CURRENT-ASSETS>                        27138881                22202081                25254288                31827107
<TOTAL-DEFERRED-CHARGES>                      12738268                11944514                12841914                11291070
<OTHER-ASSETS>                                       0                       0                       0                       0
<TOTAL-ASSETS>                               138416872               133613619               138925285               145718823
<COMMON>                                       2410397                 2417414                 2424364                 2435142
<CAPITAL-SURPLUS-PAID-IN>                     21723848                21959895                22195138                22581463
<RETAINED-EARNINGS>                           29388364                28998887                27149356                28533145
<TOTAL-COMMON-STOCKHOLDERS-EQ>                53232486                53129331                51599071                53655736
<PREFERRED-MANDATORY>                                0                       0                       0                       0
<PREFERRED>                                          0                       0                       0                       0
<LONG-TERM-DEBT-NET>                          28907000                38647000                28642000                38226000
<SHORT-TERM-NOTES>                            12000010                 9900010                18400010                 7600000
<LONG-TERM-NOTES-PAYABLE>                            0                       0                       0                       0
<COMMERCIAL-PAPER-OBLIGATIONS>                       0                       0                       0                       0
<LONG-TERM-DEBT-CURRENT-PORT>                  1257057                 1177485                 1107545                 1051241
<PREFERRED-STOCK-CURRENT>                            0                       0                       0                       0
<CAPITAL-LEASE-OBLIGATIONS>                          0                       0                       0                       0
<LEASES-CURRENT>                                     0                       0                       0                       0
<OTHER-ITEMS-CAPITAL-AND-LIAB>                38217405                38406731                37142185                45185846
<TOT-CAPITALIZATION-AND-LIAB>                138416872               133613619               138925285               145718823
<GROSS-OPERATING-REVENUE>                     76302285               121221105               162901824               222489264
<INCOME-TAX-EXPENSE>                           2253635                 2687549                 2132434                 3427308
<OTHER-OPERATING-EXPENSES>                     9057058                17733587                26368156                35204402
<TOTAL-OPERATING-EXPENSES>                    11310693                20421136                28500590                38631702
<OPERATING-INCOME-LOSS>                        4148755                 5541422                 5534397                 8666464
<OTHER-INCOME-NET>                               94682                  199593                  270086                  545155
<INCOME-BEFORE-INTEREST-EXPEN>                 4243437                 5741015                 5804483                 9211619
<TOTAL-INTEREST-EXPENSE>                        809790                 1600068                 2426318                 3344007
<NET-INCOME>                                   3433648                 4140948                 3378165                 5867612
<PREFERRED-STOCK-DIVIDENDS>                          0                       0                       0                       0
<EARNINGS-AVAILABLE-FOR-COMM>                  3433648                 4140948                 3378165                 5867612
<COMMON-STOCK-DIVIDENDS>                       1079781                 2163059                 3249798                 4341964
<TOTAL-INTEREST-ON-BONDS>                       596357                 1190742                 1960747                 2387641
<CASH-FLOW-OPERATIONS>                         7531133                11315440                 6177387                11674801
<EPS-PRIMARY>                                      .69                     .84                     .68                    1.18
<EPS-DILUTED>                                      .67                     .82                     .68                    1.17