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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0.4.3 Cropping Pattern

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

highest net agricultural returns for climatic Zone F was used.

Table 0.2 identifies this cropping pattern as well as the net

agricultural return.

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
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 plus a field delivery pressure of 60 psi for
sprinkler irrigation. The La Plata River, which would supply water
to the parcels in the Ute Mountain Ute La Plata Watershed, is located
to the west in the Ute Mountain Ute Reservation. The water surface
elevation was taken at points where the river comes closest to the Ute

Mountain Ute reservation. Detailed tabulations of the analysis are

shown in Appendix 0.1.

No parcels in the Ute Mountain Ute La Plata Watershed had a positive

residual payment capacity. Table D.3 summarizes the results of the

analysis.

0.4.5 Practicably Irrigable Acreage Determination
No lands were identified as PIA in the La Plata Watershed.

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