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WSPC01384
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Last modified
1/26/2010 11:11:29 AM
Creation date
10/9/2006 2:45:32 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8040.950
Description
Section D General Studies - General Water Studies
State
CO
Basin
Statewide
Date
9/1/1955
Author
Ivan C Crawford
Title
Water Supply of the Western Slope of Colorado
Water Supply Pro - Doc Type
Report/Study
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<br /> <br />.'.' <br /> <br />, <br />'. <br /> <br />. <br /> <br />.' <br /> <br />, <br /> <br />'. <br /> <br />001140 <br /> <br />-8- <br /> <br />(3) ability to pay 7 Deroent or more of the construction costs, are <br />included, the depletion would be 432,000 acre-feet. Subtracting this <br />quantity from 793,600 leaves a 361,000 acre-foot surplus. <br />In addition, there is this safety factor: Colorado's share of the <br />water under the compacts referred to above is 3,855,375 acre-feet. Such <br />a supply is conditioned on there peinq 7,500,000 acre-feet available each <br />year to the Upper Basin States, a situation which may not always ~btain <br />as in the case of the 1930-52 period. However, nothing in the history <br />of the flow of the river indicates the low yield of this period is to be <br />a permanent condition. Under conditions which existed from 1906 to 1930, <br />Colorado's annual share would have been 3,855,375 acre-feet if there ~ad <br />been sufficient reservoirs to store the yield of the hiah-flow years. <br /> <br />Water Supplies in the Several Basins <br /> <br />6. Colorado River r~ain ~ <br /> <br />A. Supply above Hot Sulphur Sprinqs <br /> <br />In discussing this topic, l~r. Raymond Hill of the firm of <br /> <br />Leeds, Hill and Jewett, Consulting Engineers, presents the following <br /> <br />figures and conclusions in the report made by this firm on Depletion <br /> <br />of Surface Water Supplies of Colorado West of Continental Divide: <br /> <br />mrransmountain diversions through existing <br />facilities above Hot Sulphur Springs could be 400,000 <br />acre feet per year. This is about 350,000 acre feet <br />in excess of the diversions which were made during <br />the years 1939 to 1949, the period of less than <br />average runoff which determines the safe yield of <br />the stream. This safe yield, after reservoir evapo- <br />ration losses, is only 420,000 acre feet per year, <br />leaving about 20,000 acre feet per year for main- <br />tenance of a live stream. Hence, there is ~ <br />opportunity for increasina transmountain~iversions <br />
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