WSPC01304

• File Number: 8064.100
• Description: Ute Tribes
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 6/1/1987
• Author: USDOI/BOR
• Title: Agricultural Engineering Study - Animas and Florida Watersheds - Final Report - Design-Cost Estimate for Off-Farm Irrigation Facilities and PIA Determination
• Water Supply Pro - Doc Type: Report/Study

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1336

FINAL REPORT
ANIMAS AND FLORIDA WATERSHEDS

D.1 GENERAL
The purpose of this task report is to present the methodology for
determining practicably irrigable acreage (PIA) for the Animas and
Florida River Watersheds. The test for PIA requires that the
revenues exceed the cost. The land under consideration when cropped

and irrigated must return sufficient net positive income to pay for

the costs of providing irrigation water to the farm headgate. In

order to determine PIA it is necessary to conceptually design an

irrigation transmission system to deliver water to the farm headgate

for each arable parcel. The annualized cost of the off-farm

irrigation water transmission system is compared to the net positive

income (payment capacity) of the parcel.

Arable lands were identified by Stoneman and Landers. Potential
crops, irrigation water requirements, on-farm irrigation systems

cost, and other related agronomic information were prepared by Boyle

and presented in Task A and B reports. Economic methodology and net
agricultural returns were prepared by Western Research Corporation.

This preliminary PIA analysis compares the preliminary net

agricultural return with the cost of water delivery from the primary

water source to the parcel headgate. For this preliminary analysis,

the highest net agricultural return for each climatic zone is used.

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