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<br />AUQust 3. 2005 Forecast of Colorado River Flow into <br />Lake Powell (1) (Million Acre-feet) <br /> <br /> Change From Last <br /> USSR and National Weather Service Month's Proiected <br /> April-July Water Year 2005 April-July Wat Yr 2005 <br />Maximum (2) 8.810 13.284 -0.890 -1.064 <br /> 0 <br />Mean 8.810 * 12.984 ** -0.290 -0.364 0 <br />N <br /> ~ <br />Minimum (2) 8.810 12.684 0.310 0.336 C..J <br /> N <br /> <br />* This month's A-J observed is 111 % of the 30-year A-J average shown below. <br />** This month's W-Y projected is 108% of the 30-year W-Y average shown below. <br /> <br />Comparison with past records <br />of Colorado River <br />inflow into Lake Powell <br />(at Lee Ferry prior to 1962) <br /> <br /> April-July Flow Water Year Flow <br />Long-Time Average (1922-2004) 7.887 11.699 <br />30-yr. Average (1961-90) 7.735 11.724 <br />10-yr. Average (1995-2004) 7.027 11.260 <br />Max. of Record 15.404 (1984) 21.873 (1984) <br />Min. of Record 1.115 (2002) 3.058 (2002) <br />2003 3.918 6.358 <br />2004 3.640 6.128 <br /> <br />(1) Under conditions of no other Upper Basin reservoirs. <br /> <br />(2) USBR and NWS forecasts indicate the probability of 19 chances out of <br />20 that the actual flow will not exceed the maximum value, and will not be <br />less than the minimum value. <br />