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<br />LOWER BASIN RESERVOIRS
<br />
<br />LAKE MEAD
<br />(COLORADO RIVER)
<br />
<br />
<br />Water Year 1989
<br />
<br />At the beginning of the water year the Lake Mead water
<br />surface elevation was 1199 feet with an active storage of
<br />22.795,000 acre-feet. During the winter months, the water
<br />level rose to about elevation 1203 feet near the end of February
<br />1989 and then declined to elevation 1193 feet near the end of
<br />May 1989, During June, July, and August Lake Mead
<br />continued to drop, reaching a low elevation of 1189 feet during
<br />the last week of August, with a corresponding active storage
<br />of 21.404,000 acre-feet, '
<br />
<br />During the water year, releases were made to meet
<br />downstream water use requirements in the United States and
<br />Mcxico, scheduled levels of Lakes Mohave and Havasu, and
<br />net transit losses which include river and reservoir
<br />evaporation, uses by phreatophytes, changes in bank storage,
<br />unmeasured inflows, and diversions to the Las Vegas, Nevada,
<br />are,a via the Robert B. Griffith Water Project (Project), The
<br />total release from Lake Mead through Hoover Dam during
<br />water year 1989 was 9,027,000 acre-feet. All of that amount
<br />passed through the turbines for power production. In
<br />
<br />ACTUAL RELEASES
<br />
<br />WY 1989
<br />
<br />tOOOOFII
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<br />N D J F M A M J J A S 0
<br />
<br />addition, 243,000 acre-feet were diverted from Lake Mead by
<br />the Project, At the end of the water year, Lake Mead had a
<br />water surface elevation of 1190 feet and an active storage of
<br />21,528,000 acre-feet, which reflects a decrease in storage
<br />during the water year of 1,267,000 acre-feet. On September
<br />30, 1989, the active storage of Lake Mead was 1,722,000
<br />acre-feet greater than the active storage in Lake Powell,
<br />
<br />A St, Paul, Minnesota, man, Mr, Richard Fischer. along with
<br />his wife, became the 26 millionth visitor to take the guided tour
<br />of Hoover Dam on Saturday, February 4, 1989, Tours of the
<br />dam began on January 1,1937, Hoover Dam is the leading
<br />tourist attraction among similar multipurpose water projects
<br />in the United States, It is estimated that 2 million people visit
<br />the dam each year, with approximately 700,000 taking the tour,
<br />
<br />Ground was broken in March 1989 for a new $54 million visitor
<br />center to bc built on the Nevada side of Hoover Dam, When
<br />completed, the new center will allow more \isitors than ever
<br />before to tour one of the world's engineering marvels,
<br />
<br />LAKE MEAD
<br />
<br />Reservoir
<br />
<br />Acre-feet
<br />
<br />Elevation, feet
<br />
<br />Maximum Storage
<br />Rated Head
<br />Minimum Power
<br />Surface Are,a, full
<br />Reservoir Length, full
<br />
<br />27,377,000
<br />13,653,000
<br />10,024,000
<br />
<br />1,229
<br />1,123
<br />1,083
<br />162,700 Acres
<br />115 Miles
<br />
<br />Powerplant
<br />
<br />Number of Units
<br />Total Capacity
<br />
<br />17
<br />1,914,000 KW
<br />
<br />15
<br />
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