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<br />onoe ever
<br />onoe ever
<br />years in
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<br />..15"
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<br />ting results cannot be expected to result so,f'avorably. The operl\.ting
<br />enumerated imply superhuman ability to forecast stream flow.;\Oc_
<br />eleases will be requi~ed f'rom Granby Reservoir although small in amount.
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<br />ons in tunnel operation cannot always be arranged so as to lose no
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<br />ew of these oonditions, it is ooncluded that the firm yield oi',tulill81
<br />the' I.lra.nby and Shadow MoUlltain Reservoirs should be taken a.sSOO,OOO
<br />annually. Shortages ,of 5 peroent may be expected on an avera€:;~ of
<br />5 yea.rs and shorta.ges of' 25 percent may be expeoted on an average of'
<br />20yeil.rs. SeoondarYWe.ter lIl&y he expeoted to be availa.ble i1i'sc:ml!l
<br />mounts up to 50'000 a.ore-f'eet.
<br />
<br />EFFECT OF THE PROPOSED TRANSMOUNrAIN DIVERSION ON FUTURE
<br />WESTERN SLOPE DEVELOPMENT
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<br />Most of' the diverted water is derived f'rQn the spring f'loods, when the:l'~
<br />is an exc ss of, water over all present and f'ut.ure requirelOOn\;s along the:Colo-
<br />rado Rive in the .state. To permit full use of'the inflow to the Granby:;Reser-
<br />" T" "
<br />voir, Ran h Creek Reservoir !Illy be constructed near Tabernash to store Wl!;-t;er '
<br />looally s plus. The waters there cOllBerved would in part be utilized tcire,.
<br />plaoe the ters withheld at Gra.nby Dam, but the greater part of the oo~erved
<br />water wo d be used to augment i'rrigation supplies down to Hot Sulphur S~rings
<br />and to ntain a sa.tisfa.otory stream flow in this looality for reoreatiC!l,nal
<br />purposeS\.
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<br />With
<br />Creek Res
<br />point of
<br />Shoshone
<br />1,250 sec
<br />Governme!\:
<br />present i
<br />rado-Utah'
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<br />he region above Hot sulphur Springs taken care of by the Rano~
<br />voir, the oritioal points along 'the Colorado River, from the s!tanci-
<br />esent and future use of' water, are at Glenwood Springs, where :~he
<br />ower plant Of the Publio, Servioe Co. uses present strelllll-tlows '~p to
<br />d-feet, and near Palisades at the head of'the Grand valley, ~rethe
<br />, '~
<br />highline oanal d:l.verts water for irrigation and pOWSr purposes. The
<br />igated a.rea. along the Oolora.do River between Palisades and the, 0010-
<br />ta.te line is 70.600 acres.
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<br />The a ditional arable area in this region. not now irrigated, is as
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<br />!follows,
<br />, A.cres
<br />:B,13oo
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<br />'~O.()OO
<br />, i9.ooO
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<br />,32,800
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<br />Under oons ruoted oana.ls. . , . . . . . . . . . . . . . . . . . . .
<br />Pumping t ,of Grand Valley projeot, for whioh oanal capacity has
<br />been pr vided.. . . . .. . . . .. . '. . ., . . . .. . . . .. .. .. . .. ..'
<br />Lands on M ok Flat, no present provision for water servioe. . . . .
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<br />Maxim
<br />irrigated
<br />has been m
<br />this amoun
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<br />irrigation del1Ul.nd at the head of the Grand Valley for the preserit
<br />rea and f'or the additional a.rea of 23.800 a.ores for whioh provjsion
<br />e in the constructedos.nals, is estimated as 1,700 second-fee~. and
<br />is being del1Ul.nded in the pending adjudioation proceeding. '
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<br />With ximum irrigation demands there is a full water supply ,tor the'
<br />Orohard Me a pumping plant and for the Grand V!\lley power plant. In the ~on"
<br />irrigation season the oontrolling requirement is f'or powsr with a total demand
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