MONTHLY POWER PRODUCTION SUMMARY FOR: SEP 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 51586 370 51216 370 51216 ALBENI FALLS DAM ON 26208 163 26045 163 26045 BIG CLIFF DAM 8376 30 8346 30 8346 BONNEVILLE DAM & LAK 460471 1369 459102 1027 459444 COUGAR DAM 14508 39 14469 39 14469 DETROIT DAM 35150 181 34969 181 34969 DEXTER DAM & LAKE ON 6924 26 6898 26 6898 GREEN PETER DAM 19410 64 19346 64 19346 HILLS CREEK DAM & LA 21009 38 20971 38 20971 JOHN DAY DAM & LAKE 787798 1656 786142 1159 786639 LOOKOUT POINT DAM & 25474 103 25371 103 25371 MCNARY DAM & LAKE WA 515796 2862 512934 850 514946 THE DALLES DAM & LAK 628404 1328 627076 983 627421 CHIEF JOSEPH DAM & E 909855 894 908961 894 908961 ICE HARBOR DAM 175389 1789 173600 358 175031 LITTLE GOOSE DAM & L 172529 587 171942 352 172177 LOWER MONUMENTAL DAM 180738 409 180329 245 180493 LIBBY DAM & LAKE KOO 181703 465 181238 465 181238 LOST CREEK DAM 21848 158 21690 70 21778 LOWER GRANITE DAM & 170452 1319 169133 528 169924 FOSTER DAM 7255 72 7183 72 7183 GRAND COULEE DAM 1703079 6259 1696820 6259 1696820 HUNGRY HORSE DAM 106236 0 106236 0 106236 TOTAL 6230198 20181 6210017 14275 6215923