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<br />Lower
<br />Basin
<br />16 Reservoirs
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<br />STATlsnCS
<br />ACTIVE STORAGE"
<br />RESERVOIR
<br />
<br />(ACRE. ElEVATION
<br />FEET! CFEETI
<br />MAXIMUM STORAGE 27)71000 1229
<br />RATED HEAD 13,653,000 112J
<br />Ml1'<IMUM POW~F ?QOL \O.(IL~,OOO ICaJ
<br />SURFACE AREA (FULl! 152,700 ACRES
<br />RESERVOIR LENGTH (FULLI 115MILES
<br />POWER PLANT
<br />NUMBER OF UNITS
<br />TOTAlCAP/tCITY
<br />OF UNITS
<br />
<br />"
<br />
<br />1.J44,800KILO\'lATT5
<br />
<br />'don nOlincludr 2.318,000 ~""eer of ae.d HO'.
<br />~/ow~"v.rl",,895IHr
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<br />Water Year lt75
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<br />Boo,'er Dam.
<br />Luke ltlead .
<br />
<br />On Seplember 30, 1975, the active
<br />storage of Lake Mead was 48,000
<br />acre.feet less than the active
<br />storage in Lake Powell.
<br />
<br />Because adequate space in Lake
<br />Mead and CRSP reservoirs was
<br />available during \\-"ater year 1975,
<br />no additional releases at Hoover
<br />Dam were required pursuant to
<br />the flood control regulations.
<br />(Chari 7.)
<br />
<br />At the beginning of water year
<br />1975, Lake Mead had a water sur-
<br />face elevation of 1,174 feet and
<br />an active storage of 19,358,000
<br />acre. feet. During the water year,
<br />releases were made to meet down-
<br />stream water use requirements in
<br />the United States and Mexico,
<br />programed levels of Lakes Mohave
<br />and Havasu, and transit losses
<br />which include river and reservoir
<br />evaporation, uses by phreato-
<br />phytes, changes in bank storage,
<br />unmeasured inflows, and cliver.
<br />sions. The total release from Lake
<br />Mead through Hoover Dam was
<br />8,374,300 acre. feet. At the end of
<br />the waler year, Lake Mead had a
<br />water surface elevation of 1,180
<br />feel and an active storage of
<br />20,154,000 acre. feet, which reRect
<br />an increase in storage during rhe
<br />water year of 796,000 acre-feet.
<br />
<br />Lake Mead is the only reservoir
<br />on the Colorado River in which
<br />a specified space is exclusively
<br />allocated for mainstream
<br />Rood control. Flood control regu.
<br />lations have been published. These
<br />recrulations take into account etIec-
<br />o
<br />tive space in CRSP reservoirs as
<br />well as in Lake Mead.
<br />
<br />OUTFLOW
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<br />Water Year 1111
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