MONTHLY POWER PRODUCTION SUMMARY FOR: MAY 1987
 
                    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              180026              695               179331             695            179331
ALBENI FALLS DAM ON        26788              151                26637             151             26637
BIG CLIFF DAM               4174               33                 4141              33              4141
BONNEVILLE DAM & LAK      470044             1723               468321            1292            468752
COUGAR DAM                  5741               54                 5687              54              5687
DETROIT DAM                18350              200                18150             200             18150
DEXTER DAM & LAKE ON        1746               13                 1733              13              1733
GREEN PETER DAM            11815              219                11596             219             11596
HILLS CREEK DAM & LA        5127               44                 5083              44              5083
JOHN DAY DAM & LAKE      1269280             1510              1267770            1057           1268223
LOOKOUT POINT DAM &        12290              113                12176             113             12176
MCNARY DAM & LAKE WA      700406             3445               696961             780            699626
THE DALLES DAM & LAK     1022448             1536              1020912            1137           1021311
CHIEF JOSEPH DAM & E     1132738              822              1131916             822           1131916
ICE HARBOR DAM            308955             1924               307031             385            308570
LITTLE GOOSE DAM & L      336496              580               335916             348            336148
LOWER MONUMENTAL DAM      279667              478               279189             287            279380
LIBBY DAM & LAKE KOO       44832              480                44352             480             44352
LOST CREEK DAM             29620              164                29456              72             29548
LOWER GRANITE DAM &       335207             1332               333875             533            334674
FOSTER DAM                  3080               80                 3000              80              3000
GRAND COULEE DAM         2179275             6092              2173183            6092           2173183
HUNGRY HORSE DAM           25378              ---                  ---             ---               ---
 
 
TOTAL                    8403482            21688              8356416           14887           8363218