MONTHLY POWER PRODUCTION SUMMARY FOR: MAY 1997 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 197687 459 197228 459 197228 ALBENI FALLS DAM ON 0 124 -124 124 -124 BIG CLIFF DAM 11452 35 11417 35 11417 BONNEVILLE DAM & LAK 454943 2394 452549 1796 453148 COUGAR DAM 18555 76 18479 76 18479 DETROIT DAM 48100 203 47897 203 47897 DEXTER DAM & LAKE ON 7738 26 7712 26 7712 GREEN PETER DAM 19211 86 19125 86 19125 HILLS CREEK DAM & LA 17882 40 17842 40 17842 JOHN DAY DAM & LAKE 1559500 1629 1557871 1140 1558360 LOOKOUT POINT DAM & 36863 122 36741 122 36741 MCNARY DAM & LAKE WA 591897 3254 588643 780 591117 THE DALLES DAM & LAK 614631 1244 613387 921 613710 CHIEF JOSEPH DAM & E 1478794 918 1477876 918 1477876 ICE HARBOR DAM 340062 1747 338315 349 339713 LITTLE GOOSE DAM & L 499159 586 498573 352 498807 LOWER MONUMENTAL DAM 543838 506 543332 304 543534 LIBBY DAM & LAKE KOO 170229 628 169601 628 169601 LOST CREEK DAM 38952 325 38627 143 38809 LOWER GRANITE DAM & 564051 1316 562735 526 563525 FOSTER DAM 6260 98 6162 98 6162 GRAND COULEE DAM 2713225 7572 2705653 7572 2705653 HUNGRY HORSE DAM 37048 0 37048 0 37048 TOTAL 9970077 23388 9946689 16697 9953380