WSPC07458

• File Number: 8064.100
• Description: Ute Tribes
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 6/1/1987
• Author: Boyle Engineering
• Title: Agricultural Engineering Study - McElmo 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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involving storage reservoirs.

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.

0.4.4 Preliminary PIA Analysis
A preliminary PIA analysis was performed comparing a parcel's
payment capacity with a preliminary estimate of the cost to pump
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water from the river to the parcel. This preliminary water cost was
based on the static pumping lift (the difference in ~levation 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 an
initial positive residual payment capacity.

An off-farm irrigation transmission system was designed for those

parcels showing an initial positive residual payment capacity.

Those calculations are shown in Appendix 0.2 and summarized in Table

0.4. Parcels with an initial positive payment capacity after

comparing the residual payment capacity to the cost of water were

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