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<br />'J- <br /> <br />001367 <br /> <br />. <br /> <br />. <br /> <br />February 5. 2003 Forecast of Colorado River Flow into <br />Lake Powell (1) (Million Acre-feet) <br /> <br />USSR and National Weather Service <br />April-Julv Water Year 2003 <br /> <br />Change From Last <br />Month's Proiected <br />April-Julv Wat Yr 2003 <br /> <br />Maximum (2) <br /> <br />8.500 <br /> <br />Mean <br /> <br />4.600 . <br />1.400 <br /> <br />Minimum (2) <br /> <br />11.653 <br /> <br />-1.700 <br /> <br />-1.998 <br /> <br />7.353 .. <br /> <br />-1.100 <br />-0.700 <br /> <br />-1.398 <br /> <br />3.753 <br /> <br />-0.998 <br /> <br />. This month's A-J projected is 58 % of the 30-year A-J average shown below. <br />.. This month's WY projected is 61 % 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 />Long-Time Average (1922-2002) <br />30-yr. Average (1961-90) <br />10-yr. Average (1993-2002) <br />Max. of Record <br /> <br />Min. of Record <br /> <br />Last Year (2002) <br /> <br />April-Julv Flow <br /> <br />Water Year Flow <br /> <br />7.887 <br />7.735 <br />7.027 <br />15.404 (1984) <br />1.115 (2002) <br />1.115 <br /> <br />11.699 <br />11.724 <br />11.260 <br />21.873 (1984) <br />3.058 (2002) <br />3.058 <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 />