<br />LAKE MEAD
<br />(COLORADO RIVER)
<br />
<br />Water Year 1993
<br />
<br />At the beginn;ng of water year 1993, Lake Mead, impounded
<br />by Hoover Dam, had a water surface elevation of 357.9
<br />meters (1174.4 feet) and an active storage of 23,953 million
<br />cubic meters (19,419,000 acre-feet). During the winter
<br />months, the water level continued to rise and by the end of
<br />December the water surface elevation was 358.7 meters
<br />(1176.9 feet) with an active storage of 24,335 million cubic
<br />meters (19,729,000 acre-feet). Beginning in December 1992,
<br />Pacific storms brought unusual high amounts of precipitation
<br />to the Lower Basin causing water orders below Davis and
<br />Parker dams to cut back. Releases were cut back in
<br />amounts equal to water use and also to keep the flow to
<br />Mexico as low as possible. Lake Mead continued to rise
<br />through the spring months and by the end of March 1993,
<br />the water surface elevation was 363.8 meters (1193.5 feet)
<br />with an active capacity of 27,114 million cubic meters
<br />(21,981,000 acre-feet). Then Lake Mead elevation gradually
<br />declined to 362.2 meters (1188.3 feet) by the end of June
<br />1993. During the period July through September, Lake
<br />Mead rose, reaching an elevation of about 362.5 meters
<br />(1189.2 feet) the end of the water year with a corresponding
<br />active storage of 26,371 million cubic meters (21,379,000
<br />acre-feet).
<br />
<br />ACTUAL RELEASES 11193
<br />
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<br />1111
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<br />172
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<br />711
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<br />
<br />During the water year, releases were made to meet
<br />downstream water use requirements in the United States and
<br />Mexico, programmed levels of Lake Mohave and Havasu,
<br />and 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,
<br />Nevada area via the Robert B. Griffith Water Project
<br />(project). The total release from Lake Mead through
<br />Hoover Dam during the water year 1993 was approximately
<br />8,649 million cubic meters (7,012,000 acre-feet). All of the
<br />amount passed through the turbines for power production.
<br />In addition 402 million cubic meters (325,800 acre-feet) were
<br />diverted from Lake Mead by the Project. At the end of the
<br />water year, Lake Mead had a water surface elevation of
<br />362.5 meters (1189.2 feet) and an active of 26,371 million
<br />cubic meters (21,379,000 acre-feet) which reflects an increase
<br />in storage during the water year of 2,418 million cubic
<br />meters (1,960,000 acre-feet). On September 30, 1993, the
<br />active storage of Lake Mead was 3,150 million cubic meters
<br />(2,554,000 acre-feet) greater than the active storage in Lake
<br />Powell.
<br />
<br />LAKE MI!AD
<br />
<br />Reservoir
<br />
<br />Storage Capacity
<br />Nannal poor Elewfion
<br />Minimum Power Pool
<br />Surface Area, full
<br />Re&Cl'V'Otr Length, full
<br />
<br />33,769 million cubic meters (27,371,000 acre-feet)
<br />374.6 MeIer> (1229.0 Peel)
<br />330.1 Meter> (1083.0 Pee')
<br />65,843 H<<tares (t62,1OO Acres)
<br />t8S Kilometer> (115 Miles)
<br />
<br />Powemlant
<br />
<br />Number of Units
<br />Total Capacity
<br />
<br />17
<br />1,964,500 JeW
<br />
<br />15
<br />
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