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<br />STREAMFLOW <br />Streamflow for the Colorado River, Green River and San Juan River stations for December 1999 <br />are shown in Table 2. Data presented in the following table was obtained from the monthly report <br />of streamflow and reservoir contents in the Upper Colorado River Basin, as provided by the US. <br />Geological Survey Water Resources Division, Utah District. A comparison of monthly <br />streamflow to average monthly streamflow during an 86 year period from 1914 to 1999 is <br />presented for each in figure 2 on page 4. <br /> <br />\i' <br /> <br />Table 2. <br /> <br />Streamflow for the Colorado River, Green River and San Juan River. December 1999 <br />CUMULATIVE % OF 86 YEAR <br />MONTHLY (1914-1999) <br />(OCT99-DEC99) CUMULATIVE <br />DISCHARGE DISCHARGE <br />(1000 AF.) (DEC99) <br /> <br />DECEMBER <br />DISCHARGE <br />(1000 aL) <br /> <br />% OF 83 YEAR <br />(1914-1996) <br />DECEMBER <br />DISCHARGE <br /> <br />Colorado River <br /> <br />Dear Cisco, Ut <br /> <br />Adjusted (a) <br /> <br />GTeen River <br /> <br />at Green River. Ut <br /> <br />Adjusted (b) <br /> <br />San Juan River <br /> <br />near Bluff, Ut <br /> <br />Adjusted (c) <br /> <br />Total <br /> <br />Adjusted Total <br /> <br />Colorado River <br /> <br />at Lees Ferry (d) 1018.6 <br /> <br />(8) Adjusted for change in storage in Blue Mesa Reservoir. Stomgc began in Blue Mesa Reservoir on October 27, 1965. <br />(h) Adjusted for change in storage in Flaming Gorge and Fontenelle Reservoirs. Storage began in Flaming Gorge ReservOIr <br />on November I. 1962. and in Fontenelle Reservoir in October of 1964. <br />Adjusted for change in Navajo Reservoir. Storage began on June 27. 1962. Not adjusted for San Juan-Chama <br />diversions. <br />Including the Paria River discharge. <br /> <br />(e) <br /> <br />Cd) <br /> <br />234.1 <br />195.3 <br /> <br />852.1 <br />701.3 <br /> <br />80% <br /> <br />63% <br /> <br />204.7 <br />105.9 <br /> <br />653.7 <br />405.6 <br /> <br />81% <br /> <br />73% <br /> <br />54.4 <br />31.0 <br />332.2 <br /> <br />184.8 <br />131.1 <br /> <br />55% <br /> <br />45% <br /> <br />FORECAST <br />A.<:wr{\;."g to tr? Jam!?ry t4th mid-month forecast, D~cember inflow~ ranged from 40%-\i13% of <br />ayerage. The April through July forcast ranges from 45%-74%of average, with Lake Powell <br />expecting an inflow 58% of average. <br /> <br />Table 3. <br /> <br />F ontenelle <br />Flaming Gorge <br /> <br />Blue Mesa <br /> <br />Navajo <br />Lake Powell <br /> <br />Flow comparisons of the Upper Colorado Basin ReservOIrS <br />December Percent Projected Inflow <br />[nflow of Average Jan99-MarOO Apr-Ju12000 <br />(1000 a.f.) (1000 a.f.) <br />34 103% 100 <br />3S 87% 180 <br />26 100% 79 <br />10 40% 77 <br />390 91% 1175 <br /> <br />Percent <br />of Average <br /> <br />625 74% <br />87S 73% <br />475 68% <br />350 45% <br />4500 58% <br />