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<br />1.4G0
<br />
<br />Table 6
<br />MAJOR COLORADO RIVER BASIN POWER PLANTS
<br />OPERATING CHARACTERISTICS AND RESERVOIR LEVELS
<br />WATER YEAR 1969-70
<br />
<br />I
<br />'l
<br />1
<br />
<br /> De.rignarM Storage Designated Srorage
<br /> Net Change Min. Power Above Min. Rated Abo~'e
<br /> Elevation Elevation During O~rgting Oper. Le~-d He:ild Rated Head
<br /> 'I-J0-69 9.J0-70 rear Le~'e/ 9-J0-70 Elevation 9-JO-70
<br /> (F~r Abo~'e Sea Le~'e/) (F~r) (Feet) (1000 A.F.I (F~r) (1000 A.F.I
<br />Lake Mead... 1146.9 1152.6 +5.7 1083 6,745 1123 3.136
<br />Lake Powell ,.. 3573.3 3598.9 +25.6 3490 7,91l 3570 2,611
<br />Flaming Gorge.. 598!.8 1980.4 .1.4 1871 1,158 1946 729
<br />Blue Mesa ,.. 7107.0 7517.3 +10.l 7393 729 7418 161
<br />Fontenelle 6498.5 6492.8 -1.7 6471 105 6491 12
<br />
<br />Releases of water at the Hoover Power
<br />Plant in recent years have been made only in
<br />the amounts required to meet downstream
<br />water requirements. The Hoover release
<br />during the operating year ending May 31,
<br />1970, was 7,975,000 acre-feet, and the total
<br />energy delivered to the Hoover power allot-
<br />tees was 3,716 million kilowatt-hours. Of this
<br />total, Hoover generation plus Parker-Davis
<br />Interchange was 3,079 million kilowatt-
<br />hours, and replacement energy, caused by
<br />the initial filling of Colorado River Storage
<br />Project reservoirs, amounted to 637 million
<br />kilowatt-hours.
<br />Releases from Hoover Dam and delivery of
<br />energy to Hoover power allottees for the past
<br />eight years are shown on Table 7.
<br />Table 7
<br />RElEASES FROM HOOVER DAM AND ENERGY
<br />DELIVERED TO HOOVER POWER ALLOTTEES
<br />
<br />Actual Power Energy
<br />Releases from Generation at lkliw:rro
<br />Oper:uing Yeoar Hoover Dam Hoover Dam to Allortces
<br />June I-May J/ (Acr~Feer) (Millions of KWH)
<br />1962-63... 8,712,000 3,6l8 l,654
<br />1963-64.... 8,548,000 3,167 3,649
<br />1964-61. 7,782,000 2,184 l,721
<br />1961-66. 7,618,000 2,708 l,661
<br />1966-67.. ................ 8,152,000 2,963 3,670
<br />1967-68.... 7,828,000 2,802 l,617
<br />1968-69.. 8,014,000 2,944 l,638
<br />1969-70.. 7,975,000 ],072 3,716
<br />
<br />The annual Hoover Power Integration
<br />
<br />meeting was held on June 24, 1970, to discuss
<br />
<br />water releases and power generation for the
<br />
<br />ensuing year. The Bureau of Reclamation es-
<br />
<br />timated the 1970-71 Hoover release at 8,109,-
<br />
<br />000 acre-feet, and the 1970-71 energy deliv-
<br />
<br />ery to Hoover power allottees at 3,703
<br />
<br />million kilowatt-hours, or 91.6 percent of de-
<br />
<br />fined firm energy.
<br />
<br />16
<br />
<br />..
<br />
<br />Plate 7 shows the computed power genera-
<br />tion at Hoover Power Plant, the actual stor-
<br />age in Lake Mead, and the computed power
<br />generation and storage, absent the filling of
<br />the Colorado River Storage Project reser-
<br />voirs. The 1969-70 energy deficiencies at
<br />Hoover Power Plant computed in accord-
<br />ance with the Glen Canyon Filling Criteria
<br />and the accumulated deficiency since the clo-
<br />sure of Glen Canyon Dam are shown in Ta-
<br />ble 8.
<br />
<br />J
<br />~
<br />
<br />Table 8
<br />MONTHLY AND ACCUMULATED
<br />FIRM ENERGY DEFICIENCY AT HOOVER POWER PLANT
<br />CAUSED BY FILLING OF CRSP RESERVOIRS
<br />FOR WATER YEAR 1969-70
<br />(Millions of KW-Hrs.)
<br />
<br />Computed Computed
<br />Pow.'er Power
<br />Generation I Generation l
<br />Absent with
<br />Filling Filling
<br />of CRSP of CRSP
<br />Reseryoirs Resen'oirs
<br />
<br />Total
<br />Computed
<br />Deficiency
<br />During
<br />"'Iomh I
<br />
<br />Accumu-
<br />lated
<br />Deficienc'y
<br />
<br />Month
<br />Accumulated
<br />Deficiency as
<br />of 9/30/69 ...
<br />Octo~r 1969 323
<br />November HI
<br />Decem~r ...... 316
<br />January 1970 .... 260
<br />February.......... 284
<br />March .. . 386
<br />April . 396
<br />May. .. .. 405
<br />June .................... 375
<br />July............. l69
<br />August .............. 344
<br />September 286
<br />
<br />4,951~
<br />
<br />99
<br />148
<br />120
<br />-I
<br />12
<br />61
<br />2
<br />8
<br />41
<br />29
<br />12
<br />66
<br />
<br />1,010
<br />1,198
<br />l,ll8
<br />1,1I7
<br />5,369
<br />5,430
<br />1,432
<br />I,+!{)
<br />1,481
<br />1,110
<br />1,162
<br />5,628
<br />
<br />214
<br />183
<br />196
<br />261
<br />212
<br />325
<br />394
<br />397
<br />334
<br />340
<br />292
<br />220
<br />
<br />, Computed at 83 percent efficiency in accordance with filling
<br />friteria for Lake Powell adopted April 4, 1962.
<br />Delivery of deficiency energy to Hoover allonees may folio..... a
<br />different schedule and is compensated for either in power or
<br />money.
<br />. Includes 200 million kilowan hours of "impairment" energy.
<br />
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