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<br />00131" <br /> <br />- <br /> <br />Aoril 3. 2002 Preliminary Forecast of Colorado River Flow into <br />Lake Powell (1) (Million Acre-feet) <br /> <br /> Change From Last <br /> USBR and National Weather Service Month's Forecast <br /> Aoril-Julv Water Year 2002 Aoril-Julv Wat Yr 2002 <br />Maximum (2) 5.800 8.540 -1.500 -2.276 <br />Mean 3.000 * 5.440 - -1,000 -1.676 <br />Minimum (2) 0.500 2.540 -0.700 -1.376 <br /> <br />* This month's A-J forecast is 38 % of the 30-year A-J average shown below, <br />.. This month's WY forecast is 45 % of the 30-year W- Y average shown below. <br /> <br />Comoarison with cast records <br />of Colorado River <br />inflow into Lake Powell <br />(at Lee Ferry prior to 1962) <br /> <br /> Aoril-Julv Flow Water Year Flow <br />Long-Time Average (1922-2001) 8,018 11.869 <br />30-yr. Average (1961-90) 7.735 11,724 <br />10-yr. Average (1992-2001) 7.672 11.739 <br />Max, of Record 15.404 (1984) 21.873 (1984) <br />Min, of Record 1.286 (1977) 3.663 (1977) <br />Last Year (2001) 4.301 6.955 <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 /> <br />-5- <br />