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WSP07823
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Last modified
1/26/2010 2:29:02 PM
Creation date
10/12/2006 2:37:40 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8443.200
Description
Narrows Unit - Mailing Lists Correspondence
State
CO
Basin
South Platte
Water Division
1
Date
9/1/1961
Author
US DoI BoR
Title
Site Selection Report
Water Supply Pro - Doc Type
Report/Study
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<br />232'2. <br /> <br />acquisition of rights-of-way. <br /> <br />, <br /> <br />Flood Control Benefits <br /> <br />In the reconnaissance evaluation of flood control benefits the <br />Corps of Engineers took into account direct physical flood damages <br />that could be prevented on dotn1streanl properties with a controlled <br />reservoir release not to exceed 5,000 cfs. Included are prevention <br />of potential damages to agricultural land and improvements, urban <br />conmlunities, and other forms of property such as roads, brid3eS, <br />utilHies, and irrigation tTorl';s. The evaluation also included <br />preventable agricultural losses such as costs of production, and <br />the loss of crops which would result directly from flooding as <br />well as crop losses resulting from iL~red irrigation works. <br /> <br />The reach of the South Platte River covered in these studies extended <br />do\mstream from the sites of the potential works to a point just <br />balmT the junction of the North and South Platte Rivers. <br /> <br />Follmrtng is a summary of the annual flood control benefits: <br /> <br />\-, <br /> <br />Table 6 -- Flood Control Benefits <br /> <br />Narrows <br />Site <br /> <br />l<eld County <br />Site <br /> <br />f"'~' <br /> <br />Annual Benefits <br /> <br />Without Bijou Control <br />Bijou Control <br /> <br />Total with Bijou Control <br /> <br />$503,200 <br />44,0001/ <br />$54'7,200 <br /> <br />$436,'700 <br />4':-,000 ?J <br /> <br />$480 ,100 <br /> <br />l/ Control by dikes and channel into the proposed Narrows Reservoir. <br />Y Control by Higeins Reservoir. <br /> <br />" <br /> <br />llater Supply Benefits <br /> <br />The Narrows report of 1951 contains ,lata indicating tl1at the annual <br />yield of water from the reservoir tUlder the interim plan of operation <br />(before developn'€nt of the now abandoned Blue-South Platte Project) <br />,,"ould be about 100,000 acre-feet at .;;he reservoir outlets. It,ethods <br />of benefit evaluation have changed since the studies in tha.c report <br />were made, including different agricultural price projections. <br />Hovever, the results of those studies indexed for changed prices <br />and other conditions indicate a tentative annual benefit value of <br />about $13.00 per acre-foot of water at the reservoir. Although <br />this figure vill be revised during the current investigations, <br />its use will serve for comparative purposes in this report. <br /> <br />14 <br />
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