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<br />" J." i
<br />
<br />POWER
<br />
<br />Hoover Plant Operations
<br />
<br />The primary purpose of Lake Mead is the
<br />control and conservation of water. Therefore,
<br />as has been the rule for the past several years,
<br />the Hoover power plant generation schedule
<br />for the power operating year ending I\hy 31,
<br />1966, was based on estimates of releases to meet
<br />downstream water requirements. At the time of
<br />the Power Integration meeting of Hoover
<br />power allottees held on June 23, 1965, to pro-
<br />gram operarion of Hoover power plalH for
<br />1965-66, total telease for 1965-66 was esti-
<br />mated at 8,610,000 acre-feet. The actual Hoo-
<br />ver release during the year was only 7,654,000
<br />acre-feet. The Bureau of Reclamation attrib-
<br />uted the 956,000 acre-foot reduction to three
<br />major factors: (1) water conservation efforts by
<br />water users, (2) above-normal precipitation on
<br />irrigated areas, and (3) unusually high runoff
<br />in Bill \Villiams River and other tributan' areas
<br />downstream from Lake IVlead. .
<br />Releases from Hoover Dam and deliverv of
<br />energy to Hoover power allottees for the' past
<br />five years arc shown on Table 8.
<br />
<br />Tobie 8
<br />
<br />RELEASES FROM HOOVER DAM AND ENERGY
<br />. DELIVERED TO HOOVER POWER ALLOTTEES
<br />
<br />Optrating Y far
<br />Junf l-May.31
<br />196\-62_____
<br />\962-63. __ __ __._
<br />1963-64. _
<br />1964-65__
<br />1965-66__ __..
<br />
<br />Rd('(JJ(sfrolll
<br />l!oofJuDam
<br />(Arrt-F('(t)
<br />8,200,000
<br />8.75f,000
<br />H,5f8.ooo
<br />7,78f,000
<br />7,65f,000
<br />
<br />Actual J'uu:n
<br />C'TlnG/ion
<br />,11 f{OOf)(f
<br />Dam
<br />(Millions of
<br />K/P//)
<br />
<br />3,157
<br />3,638
<br />},167
<br />2,5Hf
<br />2,701'l
<br />
<br />{,'nul;}'
<br />!J,/ifJ!rtd tu
<br />,111olttts.
<br />(Millions oj
<br />,/PI!)
<br />
<br />3,151
<br />3,652
<br />3,649
<br />3,721
<br />3,661
<br />
<br />. Includes JlOCl\'U genera lion, l'arkcr-DJvl' ]nlcrch~nKc 01 cncrl<r wLtill!oo\"<"
<br />:Ind rcp\Jccmcnt energy lor dcticicnq' dlle to filling of eRSl' 'CICt"O.r>.
<br />
<br />At the Power Integration meeting on Junc
<br />15, 1966, attended by the Principal Engineer,
<br />the Bureau of Reclamation estimated 1966-67
<br />Hoover release at 8,376,000 acre-feet. Deliverv
<br />of energy to Hoover allottees was estimated ~t
<br />3,710 million Kwh.
<br />
<br />38
<br />
<br />\
<br />
<br />I
<br />
<br />Lake Mead and Colorado River Storage
<br />Project Reservoirs
<br />
<br />Power was generated at all Colorado River
<br />Storage' Project plants throughout the year.
<br />Lake Mead remained above rated power head
<br />level and the Colorado River Storage Project
<br />reservoirs remained above minimum power op-
<br />perating levels throughout the 1965-66 water
<br />year. Plugging of the left construction diversion
<br />tunnel at Glen Canyon Dam was completed in
<br />thc spring of 1966, hence at least 2 million acre-
<br />feet of the water stored in Lake Powell cannot
<br />again be released downstream. Operating levels
<br />in Lake Mead and the Colorado River Storage
<br />Project reservoirs at the end of water years
<br />1965 and 1966 <Ire shown in the following
<br />table:
<br />
<br />Tobie 9
<br />
<br />WATER SURFACE ELEVATIONS OF
<br />COlORADO RIVER RESERVOIRS
<br />
<br />f!tt'atlvll
<br />"/-'10("';
<br />
<br />(:htlll!!,t
<br />U(tJ(1llUlI during
<br />~J/:]O/r;(i Yt'or
<br />(Fat Abat" Stll L(wi)
<br />
<br />f)(,Jlg110/td
<br />.1NlIl'mum
<br />{lOU-'ff
<br />Optratinr;
<br />[.(l,t!
<br />
<br />Storagr
<br />,4bo!!,
<br />j~finimu711
<br />Opaating
<br />Ltv,i
<br />"(SO(GO
<br />\1000 .J.n
<br />
<br />1.;lke l'dcaJ 1124.K 1127,11 +2.S 1083 4327
<br />Lnkc
<br />Powell_ _ 3530.1 J~Zl,l. :; -O.{, 3.1,9U 2297
<br />Flaming 2221
<br />Gorgc__ (JlXJoj, K ()OO4,! -U.(' ;ti71
<br />l~I\.lC: ~\"Icsa_ 7425,] 7393 III
<br />Fontcnelle_ (,\39.0 6f85 -171
<br />
<br />Thc Glen Canyon Filling Criteria provide
<br />dl<lt the United States will recompense either
<br />in power or money any deficiency in firm
<br />energy generation at Hoover power plant
<br />caused by initial filling of Colorado River Stor-
<br />age Project reservoirs. The filling period is de-
<br />fined <IS the time interval from initial storage in
<br />Lake Powell (i'l'\arch 13, 1963) to the date
<br />when Lake Powell first attains elevation 3,700
<br />feet (27.0 million acre-fect toral storage) and
<br />Lake Mead is simultaneously at or above eleva-
<br />tion 1,146 feet (I 7.0 millio'n acre-feet available
<br />storage) or I\lay 3 I, 1987, whichever OCCllrs
<br />first.
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