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Last modified
1/26/2010 2:25:24 PM
Creation date
10/12/2006 2:03:41 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.126.J
Description
San Miguel Project
State
CO
Basin
San Juan/Dolores
Water Division
4
Date
6/1/1990
Author
Boyle Engineering Co
Title
San Miguel Project Water Supply Study Summary Report Demand - Based System Operations
Water Supply Pro - Doc Type
Report/Study
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<br />c..' <br />00 <br />~ <br /> <br />,- <br />- <br /> <br />TABLE 2 <br />ESTIMATED GROSS CROP CONSUMPTIVE USE (INCHES) <br />REDVALE AREA <br /> <br />Crop Apr Mav Jun .M Aug ~ Oct Total <br />Alfalfa 1.37 2.40 7.82 7.68 6.85 5.39 0.44 31.95 <br />Spring Grains 0.34 2.16 6.57 9.98 5.64 0.0 0.0 24.69 <br />Grass Hay/ 1.19 2.41 7.56 8.24 7.78 4.68 1.05 32.91 <br />Pasture <br /> <br />NOTE: <br />1) <br /> <br />2) <br /> <br />May to September data estimated using 1983 altitude calibrated Jensen-Haise procedure as part of <br />Phase 1 Study. <br />April and October data estimated using SCS .Colorado Irrigation Guide." <br /> <br />Early season (April) gross crop consumptive use values, shown in Tables 1 and 2, were <br /> <br /> <br />estimated using data published in the Soil Conservation Service (SCS) publication "Colorado <br /> <br /> <br />Irrigation Guide.' Values given for Climatic Zones 5 and 6, which cover the study area, were <br /> <br /> <br />interpolated based on elevation for the Norwood and Redvale areas for alfalfa, spring grains, <br /> <br /> <br />and grass hay/pasture. The .Colorado Irrigation Guide" also indicated late season (October) <br /> <br /> <br />gross crop consumptive use values for these crops. Estimates for October were included for <br /> <br /> <br />consistency and were made using the same interpolation procedure described above for April. <br /> <br /> <br />The April and October gross crop consumptive use values estimated for these crops for <br /> <br /> <br />Norwood and Redvale are shown in Tables 1 and 2, respectively. <br /> <br />A portion of the water required by a crop is typically supplied by precipitation. The portion of <br /> <br /> <br />the precipitation which falls on a crop which can be used to satisfy some or all of the <br /> <br /> <br />consumptive use requirements is called effective precipitation. The portion of the precipitation <br /> <br />4 <br />
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