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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Fresent Strea~ Depletion - Units Acre Feet

Historic
Conditions

Present
Capability

':'Average annual strear:1 depletion by
i;rrigation
A verage annual streaE. depletion by
municipal and industrial use and
reservoir evaporation
Average annual stream depletion by
t~ansmountain diversion

67,400

67,400

7,400
206.300

7,400
333.700
408,500

Total' annual stream depletion

zen .100

>"Includes allowance for natural vegetation seeped land and
water surfaces without lin'ii tat ion to man-r:;ade depletion.

Potential Use

The transmountain diversion of water for use in the

South Platte River basin of Eastern Colorado is also the major
potential use of subbasin runoff. After years of intensive
study ~nd IIater development planning, the pattern of the ul-

tin;ate' di version of water to Eastern Colorado is now well de-

fined. The original system of high elevation open ditches and
canals has been suppler,;ented by a system of tunnels with asso-
ciated'water diversion facilities designed for the interception

and diversion of the available runoff of the r.:ain Colorado River
and tributaries above Granby, ;iilloh' Creek and tributaries, the
Fraser ,Ri ver and tributaries, the \1illian';s Fork River and tri b-

utaries and the Blue River and tributaries.

'.'later runoff and water diversion records on these

streams have been analyzed to show the amcunt of water diverted

historically, the amount of liSter divertable after completion

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