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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It is plonned to put all canola ond laterals in concrete-lined scctions, ':'..:.<f.

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with s01':le pipe sect1cn~ being used inlli."cns in and aro'f\d cities and tovoo,

and other highly dcveloped areas. Tho photo on tho next page is a view

of a lateral ,,'hich h::3 recently been concrete. Hned. This construction

b .llimUar to that planncd by the Durellu fo~ all la terals.

Fencing ~s pl~nned on both sides of open concrete-lined sections whcre

there is a 'safety hazard, and safety features ore included for structures

on csnab end l.argo lateralo.

In creas where t110 or l:O"rc laterals parallel each other V(:l,y closely.

consideration 11ill bo !lIven to ccmbin1nr. these lll~erllls lr;l;o a 5in[;10 .

IM:c.."ol. Othe~ th:m thic type of co:~binin3 laterals, the va:=icua i1'ri-

gation companiell will not concider lIny COO1bin3t1 on of their systems.

/In alterl".3ti....e method of.:,,~;...:."3'cimltcr thr01.lgh laterals I:y uoing lIn

undcrg<ound pipe system was studied for an area comprising about 6,700

acres in the 1<." cr. Grand Valley. Thill study showed tha t the cost of this

type sya;tc:n would be T.1uch cr.e""rcr th.-::n for a concrete-lined. lateral

syst~~. therefore, a concrete lined-IDtcr~l Gystc~ is rccc~~ended in

this report. If present llnd future studie:; indicate that ,tin ur.de~gcund

pressure system would be ~ore beneficial to areas of the v~lley, further.

consideration will be eiven this type construction.

WlIter quality G801ples ::Iud fl ow measurement IOtations Itava b.cen est;)l>l1shed

on 10 drain<lgcG which carry return flaw to the Colorl1do River. n..ta

collected et thc;;e fltctions will ascict in evlllu::tinll; the pre"cnt candi-

cions and any llnlinity 'i:'~ut:tionc reculting from irril!lation cchcdul1n3

and ,.... tcr syc tC::l3 lmprov.1I":cnts.

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