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Last modified
7/14/2009 5:02:35 PM
Creation date
5/20/2009 3:26:32 PM
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Template:
UCREFRP
UCREFRP Catalog Number
9400
Author
U.S. Bureau of Reclamation.
Title
Annual Operating Plan For Colorado River Reservoirs.
USFW Year
1995.
USFW - Doc Type
\
Copyright Material
NO
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<br />I Lake Mead <br />The normal condition will govern the operation of Lake Mead and all reasonable beneficial <br />consumptive needs of Colorado River mainstream users will be met in calendar year 1995. <br />The outlook for lowest and highest monthly releases under the most probable inflow <br />conditions for calendar year 1995 will be 771 MCM (.625 MAF) and 1,337 MCM <br />(1.084 MAF) respectively. <br />Lake Mead is expected to finish calendar year 1994 at 24,604 MCM (19.945 MAF), which <br />is 77 percent of conservation capacity and approximately 12.8 m (42 feet) below the top of <br />the conservation pool at 371.9 m (1220 feet) and 31,922 MCM (25.877 MAF). Reservoir <br />storage elevation is projected to rise to 359.7 m (1180 feet) in February 1995, which is <br />78 percent of conservation capacity or 24,938 MCM (20.216 MAF) and approximately <br />12.2 m (40 feet) below the top of the conservation pool. Storage elevation is projected to <br />decline to 356.6 m (1170 feet) in June 1995, which is 73 percent of conservation capacity or <br />23,284 MCM (18.875 MAF) and approximately 15.2 in (50 feet) below the top of the <br />conservation pool. No flood control releases are anticipated in calendar year 1995 under any <br />inflow scenario. <br />Drawdown during the peak largemouth bass spawning period in April and May is planned to <br />j be near the limits of decline recommended in the July 1982 final report of a five year study <br />by the Arizona Game and Fish Department and the Nevada Department of Wildlife. In <br />future years, as Lake Mead refills and flood control releases are again required by the <br />Hoover Dam Flood Control Regulations, consideration will be given to making these releases <br />over the fall and winter months to avoid high flow releases during the January through July <br />runoff season. This distribution of water reduces the chance of bypassing hydroelectric <br />powerplants below Hoover Dam and avoids the adverse impacts of higher flood control <br />releases on fish and wildlife, recreation, water quality, and river stabilization. <br />Lakes Mohave and Havasu <br />Mohave and Havasu Reservoirs are scheduled to be drawn down in the fall and winter <br />months to provide storage space for local storm runoff and will be filled in the spring <br />meet higher summer water needs. This drawdown will also correspond with maintenan <br />both Davis and Parker Powerplants which is scheduled for September through Februa <br />The normal filling pattern of these two reservoirs coincides well with the fishery spawm <br />to <br />ce at <br />ryng <br /> <br /> <br />13 <br />
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