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<br />o OT2Tf -, ~,~,-P . <br />. <br /> <br />. <br /> <br />" <br /> <br />Sectember 1, 2001 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 /> April-Julv Water Year 2001 Acril-Julv Wat Yr 2001 <br />Maximum (2) 4,300 7,255 0,000 0,001 <br />Mean 4,300 . 6,955 .. 0,000 0,001 <br />Minimum (2) 4,300 6,655 0,000 0,001 <br /> <br />. This month's A-J forecast is 56% of the 30-year A-J average shown below, <br />.. This month's A-J forecast is 59% of the 30-year W- Y average shown below, <br /> <br />Comcarison with cast records <br />of Colorado River <br />inflow into Lake Powell <br />(at Lee Fefry pfior to 1962) <br /> <br /> Acril-Julv Flow Water Year Flow <br />Long-Time Average (1922-2000) 8.Q18 11,869 <br />30-yr. Average (1961-90) 7,735 11,724 <br />10-yr. Average (1991-2000) 7.434 11 .403 <br />Max, of Record 15.404 (1984) 21,873 (1984) <br />Min, of Record 1,286 (1977) 3,663 (1977) <br />Last Yeaf (2000) 4,352 7,310 <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 />