MONTHLY POWER PRODUCTION SUMMARY FOR: APR 1999
 
                    TOTAL GENERATION   TOTAL STATION       NET GENERATION      POWER AUX      NET GENERATION
   PROJECT               IN MWH           USE-MWH           TO BPA-MWH         USE---MWH      REPORTED TO FERC
DWORSHAK DAM              236068              534               235534             534            235534
ALBENI FALLS DAM ON        20438              172                20266             172             20266
BIG CLIFF DAM               7411               45                 7366              45              7366
BONNEVILLE DAM & LAK      551792             2834               548958            2126            549666
COUGAR DAM                 10386               78                10308              78             10308
DETROIT DAM                24800              179                24621             179             24621
DEXTER DAM & LAKE ON        5394               29                 5365              29              5365
GREEN PETER DAM            12872               92                12780              92             12780
HILLS CREEK DAM & LA        5655               39                 5616              39              5616
JOHN DAY DAM & LAKE      1142530             1605              1140925            1124           1141406
LOOKOUT POINT DAM &        23681              196                23485             196             23485
MCNARY DAM & LAKE WA      590874             2901               587973             760            590114
THE DALLES DAM & LAK      765777             1386               764391            1026            764751
CHIEF JOSEPH DAM & E     1183933              963              1182970             963           1182970
ICE HARBOR DAM            187790             2188               185602             438            187352
LITTLE GOOSE DAM & L      337970              723               337247             434            337536
LOWER MONUMENTAL DAM      396645              488               396157             293            396352
LIBBY DAM & LAKE KOO       41206              716                40490             716             40490
LOST CREEK DAM             29756              354                29402             156             29600
LOWER GRANITE DAM &       314929             1267               313662             507            314422
FOSTER DAM                  8958              129                 8829             129              8829
GRAND COULEE DAM         1839291             8229              1831062            8229           1831062
HUNGRY HORSE DAM           64898                0                64898               0             64898
 
 
TOTAL                    7803054            25147              7777907           18262           7784792