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<br />I <br />. <br /> <br />o 0 13 ~17 <br /> <br />. <br /> <br />. <br /> <br />". <br /> <br />. <br /> <br />AUQust 8. 2003 Forecast of Colorado River Flow into <br />Lake Powell (1) (Million Acre-feet) <br /> <br />USBR and National Weather Service <br />April-Julv Water Year 2003 <br /> <br />Change From Last <br />Month's Projected <br />April-Julv Wat Yr 2003 <br /> <br />Maximum (2) <br /> <br />3,918 <br /> <br />Mean <br /> <br />3,918 . <br /> <br />Minimum (2) <br /> <br />3,918 <br /> <br />6,617 <br /> <br />-0,682 <br /> <br />-0,832 <br /> <br />6,317 .. <br /> <br />-0,082 <br />0,518 <br /> <br />-0,132 <br />0,568 <br /> <br />6,017 <br /> <br />. This month's A-J forecast is 49% of the 30-year A-J average shown below. <br />.. This month's W-Y forecast is 53% 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 />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 />1.1 15 (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 /> <br />..~ --., <br />