WSP08670

• File Number: 8270.100
• Description: Colorado River Basin Water Quality/Salinity -- Misc Water Quality
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/7/1974
• Title: Status Report - Grand Valley Unit - Colorado River Water Quality Improvement Program
• Water Supply Pro - Doc Type: Report/Study

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lids !;ravel ,md cobble ,Ltyer m;J.y be nncient strc"m dePl>si ts from
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the Colorado River and ;nay not be continuous throuGhout the vnlley.

A use of l~at"r on l'eder:ll Irrigation Projects Study W:lS conducted

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in the Gr:mJ V:llley bet\~ccn 1964 :lnd 1968. l'rom that study the

overall seasonal irriGatlon efficiencY.Has 32.6 percent. Of the

amount lost, only a sm"Yl portion is collected for reuse.. Surfaco

runoff accounts for approximately one-hnlf of all farm IOS:ies.

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remaining ono-hnlf is m:Joo up of doeI' p.orcol:ltion and f:lrm system

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Snl t Removal Effects DOI;.lstream

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.The proposed control 1'1'0[;1"=5 in the Grano Valley aro a corr.l;ination

of improvement of irrigation efficiencies and water delivery systems..

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Ir.lpler.lentation of these -programs \oIould reduce the contribution of

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d.issol...r..;\l lnii"lt:l.'il.l$ 1.,y un c~timatcd 200,OuO \:.onsiYCLl'I" .1, Thi,s is

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equivalent to approximately 19 mg/l reduction at Ir.lpcrial D:lm.

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1 Colon:do RiveT h'a.teT Qu~,1ity Ir.;prover.;cnt l'rogra.r.l USnI Bureau of
Rccl;l1,la.~ion Report Da.-~cd F.:lbrua.TY 1972.

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