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<br />OFFICIAL FIGURES SHOW NO COLORAD
<br />AVAILABLE FOR CENTRAL ARIZON
<br />
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<br />
<br />Data from U, S, Bureau of Reclamation March 1946 Report, "The Colorado
<br />as noted. Lee Ferry is division point between Upper and Lower Basins.
<br />
<br />W A TE R SUP PL Y
<br />
<br />
<br />Colorado River average (1897-1943 period) annual
<br />virgin or undepleted flow at Lee FerrY...~nmnnn. mm,nmn'mn'nn
<br />
<br />Upper Basin allocation by Colorado River Compact... 'mnnnnmmn
<br />
<br />Lower Basin's available supply at Lee Ferryn....nn.nm.mmnnmmn.mmn.m.m.
<br />(estimated long-time average, which would be reduced to 7,500,000 a.f.
<br />as a 10-year average in severe drought periods)
<br />
<br />Net average gain (less river losses) of Lower
<br />Basin tributaries, except Gila RiveL__._____.'m________________n__n .__hmu___n____
<br />
<br />Main stream reservoir losses, Lake Mead, etc....._____________________________ no____.______
<br />(U.5.B.R. estimate, including Davis and Bridge Canyon projects)
<br />
<br />Lower Basin available supply from main Colorado River..nn.mnmmnn.n
<br />
<br />Gila River Basin of Arizona net beneficial consumptive use.__________
<br />
<br />Probable salvage of natural main stream losses, Upper and Lower Basins.
<br />
<br />Lower Basin total average available suppIYmnmnm.nmnmmmnnnnnn.. nmnnnnn
<br />
<br />Nevada-contract with U.S., plus a possible claim on portion of surplus..nm nnnnnnnnn
<br />
<br />Utah and New Mexico-portions in Lower Basin U.S.B.R. estimate, but these
<br />states' claims may be 9reoter......______________________.._________..h_______________.......______._____________._+
<br />
<br />Mexico-including regulation losses, estimated not less than average of______, __________00__
<br />
<br />California-operating projects, by contracts with U. S'munumu ..mmmmuuu....
<br />
<br />Arizona-Gila Basin present use________ ___"n_______________________________ _________________
<br />Yuma Project in Arizona_____________ __ ___.____.__. ________________.___
<br />Parker Valley Indian landsmu..m. ummm..u.. mmmmu..uu ....U.mm
<br />Lillie Colorado River and other tributaries.m..um .uU'm..'munmm...
<br />Moiave Valley, etc., on Colorado Riverum___.__...u.,..____...___...___..__..
<br />Gila Project (new) from Colorado Riverum..mu.....um.m.mu..u.
<br />
<br />Total for present and authorized projects..mmu...u....uum...u..... .Uumu......
<br />(does not include 1,200,000 a.f. annually called for by the proposed Central Arizona
<br />Project)
<br />
<br />Lower Basin total for present and authorized projects.. m.muummmumm"U.m.muummm
<br />
<br />Lower Basin total average available supplyu.. 'uuUm.m.muum...m"U.mUmumunu........
<br />
<br />Deficit indicated on long-time average basis.u..__.__u..___.._________...__u._____...___.____....__...___.____.u
<br />(amount of beneficial consumptive use on the Gila River is in controversy, but this
<br />does not affect the main stream deficit because the figure for such beneficial con-
<br />sumptive use, no maHer what it may be, appears on both the credit and debit
<br />sides of the computation)
<br />
<br />The figure of 100,000 is based upon U. S. Bureau of Reclamation records up to 1943.
<br />Low flows on the river since that date increase the deficit tOum.___mh_____hU_____________
<br />
<br />(Note: Despite the ultimate deficit of from 100,000 to 300,000 a.f. now confronting
<br />operating and authorized projects, the proposed Central Arizona Project seeks
<br />to take another 1,200,000 a.f. annually.)
<br />
<br />WATER REQUIREMENTS
<br />
<br />[23 ]
<br />
<br />L
<br />
<br />2,300,000
<br />200,000
<br />300,000
<br />90,000
<br />10,000
<br />600,000
<br />
<br />_ .)-'"'
<br />3 500 000 '_":"~(;,._'
<br />, ',..' "'''''(,:'
<br />
<br />11,000,000
<br />10,900,000
<br />100,000
<br />
<br />
<br />300,000
<br />
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