Laserfiche WebLink
<br />Powell since September of 1999. Snowpack in the Upper Colorado River Basin ranged from <br />average to moderately above average throughout the winter of 2004-2005. <br /> <br />April through July is the snowmelt runoff period in the Colorado River Basin. April through July <br />unregulated inflow to Lake Powell was 8.81 million acre-feet in 2005. This is 111 percent of <br />average. Unregulated inflow to Lake Powell in water year 2005 (October 2004 through September <br />2005) is projected to be 107 percent of average. <br /> <br />Inflow to Lake Powell reached a peak of 77,000 cfs on May 28,2005. Peak inflow to Lake Powell <br />had not been this high since 1997. Since early July, inflow to Lake Powell has been below average. <br />Unregulated inflow to Lake Powell in July was 91 percent of average. August unregulated inflow is <br />expected to be about 75 percent of average. Observed inflow to Lake Powell on August 28, 2005 is <br />7,000 cfs. <br /> <br />Lake Powell reached a low elevation on April 8, 2005, at 3,555 feet (145 feet from full pool). <br />Reservoir storage had declined to 33 percent of live capacity. The last time Lake Powell had been <br />this low was in May 1969. The water surface elevation increased through the spring and early <br />summer, reaching a peak elevation of 3,608.4 feet on July 14,2005. The current elevation of Lake <br />Powell is 3,603.3 feet (96.7 feet from full pool). Current storage is 12.1 million acre-feet (50 percent <br />oflive capacity). <br /> <br />The water surface elevation of Lake Powell will likely continue to decrease through the fall and <br />winter until April 2006, when anticipated snowmelt runoff will cause the water surface level to <br />increase once more. The projected elevation of Lake Powell on January 1, 2006 is about 3,600 feet. <br /> <br />