MONTHLY POWER PRODUCTION SUMMARY FOR: MAY 1998
 
                    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              161136              473               160663             473            160663
ALBENI FALLS DAM ON        21285              168                21117             168             21117
BIG CLIFF DAM               9854               35                 9819              35              9819
BONNEVILLE DAM & LAK      538041             2431               535610            1823            536218
COUGAR DAM                 16030               73                15957              73             15957
DETROIT DAM                43750              193                43557             193             43557
DEXTER DAM & LAKE ON           0                0                    0               0                 0
GREEN PETER DAM            13856              124                13732             124             13732
HILLS CREEK DAM & LA       20525               48                20477              48             20477
JOHN DAY DAM & LAKE      1152607             1701              1150906            1191           1151416
LOOKOUT POINT DAM &        41998              127                41871             127             41871
MCNARY DAM & LAKE WA      612844             3277               609567             780            612064
THE DALLES DAM & LAK      662097             1375               660722            1018            661080
CHIEF JOSEPH DAM & E     1225973              928              1225045             928           1225045
ICE HARBOR DAM            317534             2121               315413             424            317110
LITTLE GOOSE DAM & L      460450              599               459851             359            460091
LOWER MONUMENTAL DAM      489302              562               488740             337            488965
LIBBY DAM & LAKE KOO      167579              586               166993             586            166993
LOST CREEK DAM             38958              411                38547             181             38777
LOWER GRANITE DAM &       498336             1358               496978             543            497793
FOSTER DAM                  7835              113                 7722             113              7722
GRAND COULEE DAM         2310885             7796              2303089            7796           2303089
HUNGRY HORSE DAM            4918                0                 4918               0              4918
 
 
TOTAL                    8815793            24499              8791294           17320           8798472