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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a feasibility report prepared by the end of FY 1975.

Costs

For purpo~e' of pr~parinz a feasibility cost est~te. tbe Cr~nd Valley

Unit was divided into 12 subareas. Bach subarea includes s major canal

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or section of major canal and all laterals under that canal. A oap of

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the Grand Valley Basin Unit ia shawn on page 111-17 arA shows the irri-

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gated ares. and all major canals in the valley.

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The table on the next f'll!:e showll the initial ca}>'1cities. len!:ths. and

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uUQber of structures ror each of the 12 subareas. including the Qajor

canals and laterals.

The estimates include costa fOT lining and .structures for all canals

and laterals except tho~e presently concrete lir2d for delivery to each

farm property line. Costa of on-fare improveoents including lining of

ditches. leveling. constructing autOCBted systcos. etc. viII be Qade by

the Soil Conservation Service.

All canal deliveries are proposed to be at the same locations and at the

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gme water surface elevations as the prcscnt deliveries. A study uas

made to compare the cost of linin~ the existing csnal scctions to the

cost of partislly filling in the existing canals and constructing 11

atl1nd-'lrd USBR concrete ,acction. This analysis indicated that it wO'.1ld

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be more ccon~ical and also marc practical to construct a standard US5~

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concrete section. Cost-curves were dQvclopcd for esti~3ting eaTth~ork

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