WSP11664

• File Number: 8220.128.J
• Description: Silt Project
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 8/1/1961
• Title: Report of the Reappraisal of Direct Agricultural Benefits and Project Impacts - Silt Project-Colorado - Part 1 of 2
• Water Supply Pro - Doc Type: Report/Study

330
Table 4. - Estimate of consumptive use requirements for major crops, Silt project
. - Alfalfa' ; Clover & Grass : . : Sugar
. Corn . Small Grain
. Pasture . : Beets
. . :
Davie and Harvey Mesas,
Evaluation Areas A,B,C and D
Frost-free Period ~
Consumptive use coefficient .85 .80 .75 .75 .70
Consumptive use factor 28.78 28.78 26.47 20.61 28.78
Consumptive use, Inches 24.46 23.02 19.85 15.45 20.15
Nonfrost-free Period
Consumptive use coefficient .70 .65
Consumptive use factor 4.87 4.87 ---
Coasumptive use, Inches 3.41 3.16
Total Consumptive Use, Ac. Ins./Acre 27. 87 26.18 19.85 15.45 20.15
..... Effective Seasonal Precipitation, Inches 4.84 4.84 3.40 2.32 4.07
\J't
i Net Irrigation Requirement, Ac. Ins./Acre 23.03 21.34 16.45 13.13 16.08
D~ Elk Vall~, Evaluation Areas E,F,G & H
Frost~free-Pertod.
Consumptive use coefficient .85 .80 .75 .75 .70
Consumptive usefactar 25052 25.52 24.47 19.98 25.52
Consumptive use, Inches 21.69 20.41 18.35 14.99 17.86
Nonfrost';'free Period
Consumptive use coefficient .70 .65
Consumptive use-factor 6.76 6.76
Consumptive use, Inches 4.73 4.39
Total Consumptive Use, Ac. Ins./Acre 26.42 24.80 18.35 14.99 17.86
Effective Seasonal Precipi tau on, Inches 5.50 5.50 3.90 2.74 4.22
Net Irrigation Requirement, Ac. Ins./Acre 20.92 19.30 14.45 12.25 13.64