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WSP06876
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Last modified
1/26/2010 2:24:45 PM
Creation date
10/12/2006 1:55:49 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8276.350
Description
Lower Gunnison Basin Unit - Colorado River Basin Salinity Control Project
State
CO
Basin
Colorado Mainstem
Water Division
4
Date
5/1/1981
Title
Draft Report of the Lower Gunnison Salinity Control Study
Water Supply Pro - Doc Type
Report/Study
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<br />FIGURE II-I. MULTI-OBJECTIVE PLANNING TEAM <br />LOWER GUNNISON SALINITY CONTROL STUDY, COLORADO <br /> <br />MULTI-OBJECTIVE PLANNING TEAM <br />UNDER LEADERSHIP OF THE <br />WATER AND POWER RESOURCES SERVICE <br />WORK SUPPORT TEAMS ADVISORY TEAM <br />SALINITY ECONOMICS AND SOCIAL <br />ONFARM FISH AND WILDLIFE <br />'N""NE'RING "PORT< AND PUBLIC INFORMATION <br /> <br />Irri~ation Mana~ement Schedulin~ <br /> <br />A basic assumption In irrigation water management IS t~at the maXImum <br /> <br />amount of soil moisture to be replaced is relatively fixed for each irri~a- <br /> <br />tion dependin~ on allowable moisture depletion for the soil and the crop. <br /> <br />However, frequency of irrigation, varying throughout the season depending on <br /> <br />meteorolo~ical conditions affecting daily water requirements for each crop, <br /> <br />was not a consideration in plan formulation. Therefore, the Irrigation <br /> <br />Management Schedulin~ (IMS) pro~ram developed by the Water and Power <br /> <br />Resources Service will be a useful addition to the onfarm salinity control <br /> <br />program. The IMS pro~ram uses daily meteorological data to simulate crop <br /> <br />consumptive use requirements and soil moisture depletion rates. It then <br /> <br />projects, over short intervals, the time for the next irri~ation to prevent <br /> <br />stress in the crop and it recommends the amount of water needed to replenish <br /> <br />the so il mo is ture. <br /> <br />Description of Plan Formulation <br /> <br />Salt loading from onfarm sources IS caused by seepage and <br /> <br />deep percola- <br />n"CO <br />can r{)t'tt-" <br /> <br />tioo of irrigation water into saline aquifers. Practices that <br /> <br />Il-5 <br />
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