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WSP04368
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Last modified
1/26/2010 12:55:08 PM
Creation date
10/12/2006 12:17:56 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8407
Description
Platte River Basin - River Basin General Publications
State
CO
Basin
South Platte
Water Division
1
Date
7/17/1961
Author
J M Dille
Title
Lower South Platte Water Supplies
Water Supply Pro - Doc Type
Report/Study
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<br />There are about 30 operating ditches in the District; most of them <br />small ones cOvering first bottom land. <br />If we combine the records of both Districts (using 20 year averages) <br />we can get a clearer understallding of lrllat happens below Kersey. <br />Deducting the Julesburg discharge of 318,700 acre-feet from the <br />509,200 at Kersey we get 191,500 acre-feet as the total average consumptive <br />loss in the 140 miles of river which serves about 235,000 acres of irrigatel!!. <br />land. The Julesburg flow is 62% of Kersey. <br />The total average diversions are 393,000 acre-feet for direct use an. <br />368,000 for storage, a total of 761,000 acre-feet. <br />Adding this to the Julesburg flow of 318,700 we get 1,080,000 acre-f.et; ) <br />or slightly over twice the original Kersey supply. <br />Subtracting the Kersey figure of 509,200 we get 570,500 acre-feet as <br />the twenty year average return flow, an average of 5.6 C.F.S. per mile <br /> <br />~~,C:~!i,9~ <br /> <br />- 6 - <br /> <br />Adding the total reservoir discharges of 89,230 acre-feet to the <br /> <br /> <br />direct diversions of 188,600 we get 276,140 acre-feet as the average <br /> <br /> <br />headgate supply for the estimated 105,000 acres of irrigated land, a du~y of <br /> <br />about 2.6 acre-feet per acre. <br /> <br />of river. <br /> <br />The 191,000 acre-feet consumptive loss is just one-fourth of the <br />total diversion. <br />Assuming 235,000 acres of irrigated land in the valley, the use would <br />be 81% of all acre-foot per acre. <br />These return flow determinations have not considered the effects of <br />occasional local floods from tributary streams. <br />The Ivater COl1ll1issioners of both Districts have kept records of the <br />estimated amount and duration of these floods. <br /> <br />c <br />. c.l.., : o:LiL _.i;L, -,",,-<~,,",_ <br /> <br />.-"", ~~;,...,-' '-. <br /> <br />~~",-':""'~cic...i..,,_-<,:;:";&~,..'~_.;~, <br /> <br />if <br /> <br /> <br /> <br />
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