MONTHLY POWER PRODUCTION SUMMARY FOR: MAY 2001 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 46399 402 45997 402 45997 ALBENI FALLS DAM ON 24763 168 24595 168 24595 BIG CLIFF DAM 11990 31 11959 31 11959 BONNEVILLE DAM & LAK 380851 2532 378319 1899 378952 COUGAR DAM 13365 87 13278 87 13278 DETROIT DAM 42500 193 42307 193 42307 DEXTER DAM & LAKE ON 8998 24 8974 24 8974 GREEN PETER DAM 19568 63 19505 63 19505 HILLS CREEK DAM & LA 14075 44 14031 44 14031 JOHN DAY DAM & LAKE 725244 1480 723764 1036 724208 LOOKOUT POINT DAM & 33598 112 33486 112 33486 MCNARY DAM & LAKE WA 482335 2823 479512 780 481555 THE DALLES DAM & LAK 481636 1275 480361 944 480692 CHIEF JOSEPH DAM & E 472304 927 471377 927 471377 ICE HARBOR DAM 332080 2202 329878 440 331640 LITTLE GOOSE DAM & L 327870 648 327222 389 327481 LOWER MONUMENTAL DAM 349296 763 348533 458 348838 LIBBY DAM & LAKE KOO 57741 695 57046 695 57046 LOST CREEK DAM 34668 382 34286 168 34500 LOWER GRANITE DAM & 347424 1341 346083 536 346888 FOSTER DAM 9325 120 9205 120 9205 GRAND COULEE DAM 753180 4098 749082 4098 749082 HUNGRY HORSE DAM 5616 0 5616 0 5616 TOTAL 4974826 20410 4954416 13614 4961212