WSP04694

• File Number: 8281.400
• Description: Colorado River Studies and Investigations -- Colorado River Depletion Projections
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 6/1/1965
• Author: C. Jex Engineers
• Title: Report on Water Runoff and Stream Depletion of the Main Stem Colorado River Basin in Colorado
• Water Supply Pro - Doc Type: Report/Study

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is estir.:ated to have averaged 2,500 acre feet per year for
the study period. Data on present strear.: depletion is SUWlLar-
ized in the following table:

Present Strear.i Depletion - Acre Feet

*Average annual strear: depletion
by irrigation
A verage annual streani depleticn
oy municipal and industrial
use and reservoir evaporation
Tctal annual strear., depletion

29,800

2,500
32,300

*Includes allowance for natural vegetation, seeped
land and water surfaces without lird tat ion to r.,an-
niade depletion.

Fotential Use

Collbran Frcject vlater will increase the irrigated

land in Plateau Valley by 2,200 acres. Project ';later is also

being supplied to 17,680 acres of the irrigated land of the

valley: in need of a suppleLental supply of water. Studies
by the Bureau ',f Reclar.;aticn indicate that an additional 6,120
acres of new land and also 2,770 acres of the irrigated land

of the, subbasin n;ay well be provided irrigation vlater. This

additional new land irrigaticl1 and the suppleEental water
supply vlOuld provide for the full irrigation of 37,420 acres
of land. This may be decreased by 920 acres at such time as
the full recreation development of the basin is realized, leav-
ins 36,500 acres as the tctal area of irrigated land. The in-
crease in strear.: depletion froc irrigation would be 21,700

acre feet per year.

Except for expanded irricaticn as discussed above,

ne1l vater use in the valley will be sl::all. The Ute don:estic

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