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<br />OOlH8 <br /> <br />. <br /> <br />. <br /> <br />Auaust 16. 2004 Final 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 2004 <br /> <br />Change From Last <br />Month's Proiected <br />April-Julv Wat Yr 20D4 <br /> <br />Maximum (2) <br /> <br />3.638 <br /> <br />Mean <br /> <br />3.638 . <br />3.638 <br /> <br />Minimum (2) <br /> <br />6.502 <br /> <br />-0.437 <br /> <br />-0.612 <br /> <br />6.202 .. <br />5.902 <br /> <br />0.163 <br />0.763 <br /> <br />D.D88 <br />D.788 <br /> <br />. This month's A-J observed is 46% of the 30-year A-J average shown below. <br />.. This month's W-Y observed is 52% of the 3D-year W-Y average shown below. <br /> <br />Comparison with past records <br />of Colorado River <br />inflow into Lake Powell <br />(at Lee Ferrv prior to 1962) <br /> <br />Long-Time Average (1922-2003) <br />30-yr. Average (1961-90) <br />10-yr. Average (1994-20D3) <br />Max. of Record <br />Min. of Record <br /> <br />Last Year (2003) <br /> <br />April-Julv Flow <br /> <br />Water Year Flow <br /> <br />7.887 <br />7.735 <br />7.D27 <br />15.404 (1984) <br />1 .115 (2DD2) <br />3.918 <br /> <br />11.699 <br />11.724 <br />11 .260 <br />21.873 (1984) <br />3.D58 (2002) <br />6.358 <br /> <br />(1) Under conditions of no other Upper Basin reservoirs. <br /> <br />(2) USSR 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 />