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<br />,.l <br /> <br />STREAMFLOW <br />Streamflow for the Colorado River, Green River and San Juan River stations for April 1999 are <br />shown in Table 2. Data presented in the following table was obtained from the monthly report of <br />streamflow and reservoir contents in the Upper Colorado River Basin, as provided by the U.S. <br />Geological Survey Water Resources Division, Utah District. A comparison of monthly <br />streamflow to average monthly streamflow during an 84 year period from 1914 to 1997 is <br />presented for each in figure 2 on page 4. <br /> <br />APRIL <br />DISCHARGE <br />(1000 aJ) <br /> <br />Streamflow for the Colorado River, Green River and San Juan River, April 1999 <br />CUMULATIVE % OF 84 YEAR <br />MONlHLY (1914-1997) <br />(APR 99) CUMULATIVE <br />DISCHARGE DISCHARGE <br />(1000 A.F.) (APR 99) <br /> <br />% OF 83 YEAR <br />(1914-1996) <br />APRIL <br />DISCHARGE <br /> <br />Table 2. <br /> <br />Colorado River <br /> <br />near Cisco, Vt <br /> <br />Adjusted (a) <br /> <br />Green River <br /> <br />at Green River, Ut <br /> <br />Adjusted (b) <br /> <br />San Juan River <br /> <br />near Bluff, Vt <br /> <br />Adjusted (c) <br /> <br />Total <br /> <br />Adjusted Total <br /> <br />Colorado River <br /> <br />at Lees Feny (d) 727.0 <br /> <br />(a) Adjusted for change in storage i.n Blue Mesa Re'31:r.cir. Storage 'Degan in Blue Mesa Reservoir on October 27, 1965. <br />(b) Adjusted for change in storage in Flaming Gorge and Fontenclle Reservoirs. Storage began in Flaming Gorge Reservoir <br />on November 1. 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 />229.2 <br />208.4 <br /> <br />38% <br /> <br />1653.7 <br />1565.4 <br /> <br />70% <br /> <br />434.0 <br />400.1 <br /> <br />91% <br /> <br />2152.0 <br />\542.5 <br /> <br />101% <br /> <br />63.9 <br />113.3 <br />721.8 <br /> <br />54% <br /> <br />5]8.5 <br />570.9 <br /> <br />80% <br /> <br />(,) <br /> <br />Cd) <br /> <br />FORECAST <br />Ivfay iniiows faIlged from S3'lO-157~.O ofav~ragc. The iJ..prii th':0ugh ;~Jy f(jfl,;a;)t. nmg.c;s [rein <br />85%- \30% of average according to the June I st preliminary forecast, with Lake Powell <br />increasing to 98% of average. <br /> <br />Table 3. Flow comparisons of the Upper Colorado Basin Reservoirs <br /> Outlook <br /> May Flow Percent of Apr-Jul 1999 Percent of <br /> (I 000 a.f.) Average (1000 af.) Average <br />F omenelle 275 149.00% ] 100 130.00% <br />Flaming Gorge 458 \57.00% 1550 130.00% <br />Blue Mesa 178 83.00% 600 86. 00% <br />Navajo 265 95.00% 660 8500% <br />Lake Powell 1875 84.00% 7600 98.00% <br />