MONTHLY POWER PRODUCTION SUMMARY FOR: JUN 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 244015 460 243555 460 243555 ALBENI FALLS DAM ON 26595 193 26402 193 26402 BIG CLIFF DAM 7510 32 7478 32 7478 BONNEVILLE DAM & LAK 478538 2238 476300 1678 476860 COUGAR DAM 13523 61 13462 61 13462 DETROIT DAM 30450 184 30266 184 30266 DEXTER DAM & LAKE ON 0 0 0 0 0 GREEN PETER DAM 11724 53 11671 53 11671 HILLS CREEK DAM & LA 17086 49 17037 49 17037 JOHN DAY DAM & LAKE 1102200 1710 1100490 1197 1101003 LOOKOUT POINT DAM & 33344 108 33236 108 33236 MCNARY DAM & LAKE WA 581923 2960 578963 790 581133 THE DALLES DAM & LAK 596859 1349 595510 998 595861 CHIEF JOSEPH DAM & E 1269120 881 1268239 881 1268239 ICE HARBOR DAM 251814 1904 249910 381 251433 LITTLE GOOSE DAM & L 406276 590 405686 354 405922 LOWER MONUMENTAL DAM 464783 470 464313 282 464501 LIBBY DAM & LAKE KOO 336121 558 335563 558 335563 LOST CREEK DAM 37618 296 37322 130 37488 LOWER GRANITE DAM & 441666 1342 440324 537 441129 FOSTER DAM 6733 92 6641 92 6641 GRAND COULEE DAM 2401329 7163 2394166 7163 2394166 HUNGRY HORSE DAM 98694 0 98694 0 98694 TOTAL 8857921 22693 8835228 16182 8841740