WSPC04744

• File Number: 8064.100
• Description: Ute Tribes
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 1/8/1986
• Author: Boyle Engineering
• Title: Agricultural Engineering Study - McElmo Watershed - Task D-E Report - Step A
• Water Supply Pro - Doc Type: Report/Study

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0.4.3 Cropping Pattern

FOr the preliminary analysis of PIA, a cropping pattern with the

highest net agricultural returns was used. Table 0.2 identifies

this cropping pattern as well as the net agricultural return, Lands

in the McElmo Watershed were located within climatic Zones 0 and E.

D.4.4 Preliminary PIA Analysis

A preliminary PIA analysis was performed comparing a parcel's

payment capacity with a preliminary estimate of the cost to pump

water from the river to the parcel. This preliminary water cost was

based on the static pumping lift (the difference in elevation from

the water surface in the river to the elevation of the parcel) for

gravity irrigated fields or plus a field delivery pressure of 60 psi

for sprinkler irrigation. Detailed tabulations of the analysis are

shown in Appendix 0.1. Table 0.3 identifies only those parcels with

a positive residual payment capacity requiring further

consideration. A total of 13 parcels covering 495 acres showed a

positive residual payment capacity.

An off-farm irrigation transmission system was designed for those

parcels showing a positive residual payment capacity. Those

calculations are shown in Appendix 0.2 and summarized in Table 0.4.

parcels with a positive payment capacity after comparing the

residual payment capacity to the cost of water are initially

identified as practicably irrigable.

Instead of designing individual lines of supply to each of these

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