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WSP07544
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Last modified
1/26/2010 2:27:48 PM
Creation date
10/12/2006 2:27:02 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
822.600.10
Description
Colorado River Annual Operating Plan - Annual Reports
Basin
Colorado Mainstem
Date
1/1/1992
Author
USDOI/BOR
Title
Annual Operating Plan
Water Supply Pro - Doc Type
Annual Report
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<br /> <br />21 <br />Drawdown during the peak large mouth bass spawning period in April and May is <br />planned to be near the limits of decline recommended in the July 1982 final report <br />of a five year study by the Arizona Game and Fish Department and the Nevada <br />Department of Wildlife. No flood control releases are scheduled for 1992, but in <br />future years, as Lake Mead refills and flood control releases are again required by <br />the Hoover Darn Flood Control Regulations, consideration wiIl be given to making <br />those releases over the fall and winter months to avoid high flow releases during <br />the January to July runoff season. This distribution of water reduces the chance of <br />bypassing hydroelectric powerplants below Hoover Darn and avoids the adverse <br />impacts of higher flood control releases on fish and wildlife, recreation, water <br />quality, and river stabilization. <br /> <br />Lakes Mohave and Davasu <br /> <br />Mohave and Havasu Reservoirs are scheduled to be drawn down in the fall and <br /> <br />winter months to provide storage space for local storm runoff and will be filled in <br /> <br />the spring to meet higher summer water needs. This drawdown will also <br /> <br />correspond with maintenance at both Davis and Parker Powerplants which is <br /> <br />scheduled for September through February. The normal filling pattern of these two <br /> <br />reservoirs coincides well with the fishery spawning period. Since lake elevations <br /> <br />will be typical of previous years, nonnal conditions are expected for boating and <br /> <br />other recreational uses. <br />
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