WSPC05773

• File Number: 8064.100
• Description: Indian Water Rights Ute Tribes
• State: CO
• Basin: Statewide
• Date: 6/1/1987
• Author: Boyle Engineering
• Title: Agricultural Engineering Study Southern Ute and Ute Mountain Ute Indian Reservations San Juan Watershed Final Report
• Water Supply Pro - Doc Type: Report/Study

I
I
I
I
I
I
I
I
I
I
I
I I
I
I
I
I
I
I
I

1283

Therefore, it was not necessary to perform any operational studies

involving storage reservoirs.

D.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. All
parcels in the San Juan Watershed are located in climatic zones D, E,

F, and G.

0.4.4 Preliminary PIA Analysis
A prel iminary PIA anal ysi s was per formed compar ing a parce l' 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 D.3 identifies only those parcels with

an initial positive residual payment capacity requiring further

consideration. A total of 20 parcels covering 582 acres showed an

initial positive residual payment capacity.

An off-farm irrigation transmission system was designed for those

parcels near the San Juan River showing an initial positive residual

payment capacity. Those calculations are shown in Appendix D.2 and

9