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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future use requirement. From tirrie tc. tin;e the information
here reported n,ay require refiner,.ent and adjustn;ent as basin
develqpment J;,oves forward.
Data on watershed area, the origin of runoff and
basin water yield is discussed under the heading INTRODUCTION.
The basin has been divided into seven subbasins, each repre-
senting one segen;ent of the basin. Information on individual
strean, runoff, present stream depletion and anticipated future
water use requiren:ents are discussed under the appropriate sub-
basin headings. A map showing the location and boundary of
each of the subbasins and the Little Dolores River and Coates
Creek basins is made a part of this report. A surrJ"ary of the
findings of study and the effect of strean, depletion on the
water supply of the river basin is discussed under the heading
SUMJARY.

Draina,.;e Basin
The basin e-f the r,.ain ster" of the Colorado River is
the Vlat'ershed area of the Colorado located upstrean. fron; the
Colorad'c-Utah state line and is one of the principal tributary
stream basins of the Colorado River. It is located in the
West Central part of Colorado. The Gunnison River basin, al-
though tributary to the rr,ain sterr; of the Colorado, is for
study purposes considered a separate river basin. Unless other-
wise noted in this report, all reference to river drainage
basin and water runoff will refer to tlie rr.ain stem of the

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