WSPC02183

• File Number: 8064.100
• Description: Ute Tribes
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 6/1/1987
• Author: CO Dept of Law
• Title: Agricultural Engineering Study - Ute Mountain Ute La Plata Watershed - Final Report - Design-Cost Estimate for Off-Farm Irrigation Facilities and PIA Determination
• Water Supply Pro - Doc Type: Report/Study

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quantities in the r-ange of one foot aver-age cuts at a cost of SO.50 to

S1.00 per- cubic yar-d. As a conser-vatively low estimate, an aver-age

6-inch cut at SO.50 per- cubic yar-d for- a total cost of S403 per- acr-e
was assumed for- this Task 0 analysis. Amor-tizing this cost at 8-3/8
per-cent inter-est over- 50 year-s gives a cost of S34.40, or- in r-ound
number-s, S35 per- acr-e. This cost was then included in the on-farm

costs for- gravity irr-igation.

0.3 .OFF-FARM IRRIGATION TRANSMISSION SYSTEM COST
0.3.1 General
The off-farm ir-r-igation tr-ansmission facilities will generally
consist of tr-ansmission pipelines, pumping stations, and diver-sian
facilities. Roads for- access to pump stations; rights-of-way; and
the extension of electrical power services to pumping stations were

not included in the cost analysis. Costs for- those items included

ar-e based on exper-ience with similar- facilities. All costs ar-e then

amortized using a discount r-ate of 8-3/8 percent over- a 50 year-

pr-oject life.

0.3.2 Pumping Stations
pump station costs wer-e estimated using an equation which consider-s

flow and horsepower as variables. The equation is based on Boyle's

exper-ience with var-ious size agr-icultur-al pump stations which
include pump motor, pump structure, valves, sur-ge control, and power
panel. The equation is:
Cost (S) = 2441(GPM)O.41 + 150(HP)1.05

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