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:,-' ;',:.~. f.;..:,';~.:. OPt:r<p.?~:-.;l.: c .'cIPIErn-.: ~.Ali../":D FROM t.:i'I-'t::R L'ILUKADO REGlu~ WATER OPERATIONS BRANCH ATTENTION: UC-439 P.O. BOX 11568 SALT LAKE CITY, UT 84146 PHONB 801-524-5576 ************************************************************************************************************************ RUNOFF PROJECTIONS AND INFLOW INFOQKATION INTO UPPER BASIN RESERVOIR PROVIOEO BY THE COLORADO RIVER FORECASTING SERVICE THROUGH THE NATIONAL IlEATIIB1l SERVICE'S COLORADO BASIN RIVER FORECAST CENTER IlRE AS FOLLOWS: MONTHLY DISTRIBUTION OF FLOW (1000 A-F) . OBS / FORECASTS SEP OCT /NOV DEC JMI/ LAKE POWELL 495 494 /440 /380 /360 BLUE MESA 46 40 30 I 24 I 20 FONTENELLE 45 48 40 / 35 / 32 FLAMING GORGE 46 58 48 / 38 I 40 VALLECITO 11 1 4 I 4 /3.5 NAVAJO UNREG 58 26 20 I 18 I 18 NAVAJO REGULTD* 62 35 22 / 24 / 24 note - THE NAVAJO UNREG IS THE ENTITY FOR WHICH FORECASTS HAVE HISTORICALLY BEEN MADE. NAVAJO REGULATED IS THE REQUESTED NEW FORECAST. * REGULATED FORECASTS ARE DERIVED FROM MlALYZING THE RECORD MID COMPARING IT TO AVERAGES. THE. FORECASTS HAVE MI ADDITIONAL SOURCE OF ERROR BECAUSE THE RESERVOIR MID TUNNEL OPERATORS MAY SUBSTMlTIALLY DEVIATE FROM THE ESTIMATED REGULATION. precipitation during October over the Colorado River Basin ranged from 120 percent of average for the Animas River Basin to 340 percent of average for the Green River Basin above Flaming Gorge. Basin precipitation for the upper Colorado mainstem, Green, and San Juan Basins was 203, 243, and 126 percent of average, respectively. The first two weeks of October saw a wet weather pattern over most of the basin, while the last two weeks were dominated by a dry pattern. The first five days of November were generally very dry with much below average precipitation over most of the basins. ****************************************************************************************************