WSPC06979

• 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 - Piedra 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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1250

Off-farm irrigation transmission facilities
designed for those parcels with preliminary
greater than the off-farm water pumping costs.
re-evaluated, added to the facilities cost,
preliminary payment capacity.

were conceptually

payment capacities
The pumping cost was
and compared to the

To complete the PIA analysis, the cropping pattern and payment
capacities were reviewed by the economist taking into account the
practicality of the cropping pattern for the particular parcel and
any agronomic costs that might be particular to the parcel. Several
iterations of this process between the economist and the engineer

were sometimes necessary in order to develop the most economical

parcel and facilities layout. Those parcels that still exhibited

positive residual payment capacity after these further analyses were

then determined to be practicably irrigable.

0.2 SELECTION OF PARCELS FOR OFF-FARM DESIGN

Parcels to be considered for PIA analysis were identified in the Task

B Report along with on-farm irrigation costs. The Task B report

identified irrigation costs for handmove sprinkler, sideroll

sprinklet:, gravity (furrow or basin), center pivot, and center pivot

with sprinkler in the corners. Computer tabulation compared on-

farm irrigation costs to the crop payment capacity for an

alfalfa/barley crop rotation.

The fit:st step in making this task analysis was detet:mination of the

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