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Last modified
1/26/2010 12:31:10 PM
Creation date
10/11/2006 10:27:36 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8276.150
Description
Grand Valley Unit-Colorado River Basin Salinity Control Project
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
4/1/1975
Title
Plan of Work Outline: On-Farm Salinity Control Investigations for the Grand Valley Area
Water Supply Pro - Doc Type
Report/Study
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<br />':';) <br />"'1' <br />,:;) <br />.-4 <br /> <br />6 <br /> <br />..::) <br /> <br />The U.S. Bureau of Reclamation has an irrigation scheduling program <br />underway on approximately 7,200 acres (1973). A feasibility study <br />to determine the best method of increasing water delivery efficiency <br />in the Grand Valley area began in FY 1972 with the purpose of eli- <br />minating a part of the return flow containing high concentrations of <br />salt, and thereby reduce the salinity of the Colorado River. Water <br />quality samples and flow measurement stations have been established <br />on ten drainages which carry return flow to the Colorado River with a <br />study area selected in the Valley to acquire detailed information on <br />surface and ground water quality and sources. <br /> <br />The Bureau of Reclamation is preparing the draft environmental impact <br />statement for the central units of the Colorado River Water Quality <br />Improvement Program. The statement will cover all control units out- <br />lined in the January 1974 CRWQIP Status Report, but wHl emphasize four <br />of the units: The Grand Valley unit; the Paradox Valley unit; the <br />Crystal Geyser unit; and the Las Vegas Wash unit. <br /> <br />The Western Colorado Projects Office is preparing the section concern- <br />ing the Grand Valley, and will detail the impacts of the Systems Improve- <br />ment and Irrigation Management Services programs on water quality, land <br />use, wildlife resources, soils, economics, and other factors. A contract <br />has been executed with a faculty member at Colorado State University to <br />compile existing data on the flora and fauna of the Grand Valley. <br /> <br />On-farm improvements are continually being carried out by local land- <br />owners through soil conservation district activities with technical <br />assistance available from the Soil Conservation Service and financial <br />assistance available through the Agricultural Stabilization and Conser- <br />vation Service. <br /> <br />The Indian Wash Floodwater Protection Project (Public Law 566) is <br />installed and protects urban and agricultural lands in Grand valley . <br />This program is available for appropriate irrigation water manage- <br />ment, flood prevention and other multipurpose projects. <br /> <br />The Resource Conservation and Development Program approved for opera- <br />tion in June 1974 is available in the development of wise and efficient <br />use of natural resources as appropriate projects are developed. <br /> <br />The Grand Valley study area is, with limited exceptions, the same area <br />as described as the Grand Valley Subbasin in the Type IV Colorado River <br />Basin in Colorado report which is published. <br /> <br />Problems and Needs <br /> <br />Salinity Problems - Return flows from the irrigated area to the Colorado <br />River probably contain as much salt now as they did at the inception of <br />irrigation. It can be assumed this level will continue unless excess <br />
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