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<br />lower Basin Reservoirs
<br />
<br />(ACRE- ELEVATION
<br />FEETl (FEETt
<br />MAXIMUM$TCflAGE 27.371.000 1229
<br />.RATEDHEAD 13,653.000 1123
<br />MINIMUM POWER POOL 10,024.000 1083
<br />SUP,~ACE ARE,!l.\l'=UlLl 1&2 ?DQACRES
<br />RESERVOIR LENGTH (FULLl '115MILES
<br />POWER PLANT
<br />NUMBER OF UNIT~
<br />TQT<\L CAPACITY
<br />OF UNITS
<br />
<br />17
<br />
<br />At the beginning of water year 1976, Lake Mead
<br />had a water-surface elevation of 1,180 feet and an
<br />active storage of 20,196,000 acre-feet, During the
<br />water year, releases were made to meet down-
<br />stream water use requirements in the United States
<br />and Mexico, programed levels of Lakes Mohave
<br />and Havasu, and transit losses which include river
<br />and reservoir evaporation, uses by phreatophytes,
<br />changes in bank storage, unmeasured inflows, and
<br />diversions. The total release from Lake Mead
<br />through Hoover Dam was 8,319,000 acre-feet. At
<br />the end of the water year, Lake Mead had a water-
<br />surface elevation of 1,179 feet and an active stor-
<br />age of 20,062,000 acre-feet, which reflect a de-
<br />crease in storage during the water year of 134,000
<br />acre-feet.
<br />
<br />On September 30, 1976, the active storage of Lake
<br />Mead was 421,000 acre-feet more than the active
<br />storage in Lake Powell.
<br />
<br />Because adequate space in Lake Mead and CRSP
<br />reservoirs was available during water year 1976,
<br />no additional releases at Hoover Dam were re-
<br />quired pursuant to the flood control regulations.
<br />(Chart 7,)
<br />
<br />Hoover Dam, Lake Mead
<br />
<br />
<br />STATISTICS
<br />ACTIVE STORAGE"
<br />RESERVOIR
<br />
<br />1,344,800 KILOWATTS
<br />
<br />"dot!s nor inClude 2.318/)00 dCfe.feer of de..d storiJge
<br />beloO'lelev.Jt,ofl895Ieec
<br />
<br />OUTFLOW
<br />
<br />. ~:I. "-""~;:..
<br />00, ~i'''''\
<br />520_AVERAGE .,(:.,,\
<br />~ ' ' " ",.. '" .'
<br />S 10 . .. . h'.' ~.- ;?~' - _'-~ .-'-~ _' -, ,~'-- . _ ,<~'., .~:.-,: ,> .-r..' --~. ~-.- ;~~>:~<,~~' (\.~.
<br />".,.",.._,..,"""..,'.. '" ---'. "....""'...,,
<br />~ 0 "~" ;-:;:-'~-.",:'< .~~,~::-, -~' '.;'. :-'., :~::-~,~~,;,_: .,' ._; ~~ ;::':' \'-"'~~<.:<>\
<br />
<br />U 20 LOWER QUARTILE ". '....~:~ .. ;...:-:".:,..-'A
<br />
<br />
<br />I ~ -,,,,,'",, Bilf.):
<br />
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<br />
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<br />". "','
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<br />
<br />o
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<br />" > u Z m . . > " > " " ,; U Z " . > w > "
<br />u 0 w " < ~ < Z ~ '" "' u 0 < . < Z ~ 0 "
<br />C Z 'Q ~ ~ ~ w ~ ~ ~ " ~ ~ w
<br /> " , 4 , < ~I 0 z , < , 4 ~ I
<br /> Wite. Vn' 1976 WB~e, Y\IIr '977
<br />14
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