7865

• UCREFRP Catalog Number: 7865
• Author: Wright Water Engineers, I.
• Title: Estimated Costs for East Branch Creek and Adobe Creek Reservoir Systems and Colorado River Pumping Facilities.
• USFW Year: 1990.
• USFW - Doc Type: \
• Copyright Material: NO

t
Mr. Ed Rosar
March 21, 1990
Page 6
i

The cost estimates presented in Table 3 are conceptual in nature because no site feasibility
investigations have been performed. Additional investigations will be required to address
site feasibility.
HORSETHIEF CANYON HYDROELECTRIC PROTECT
Wright Water Engineers prepared a draft report 'Preliminary Economic and Engineering
' Investigation of the Horsethief Canyon Forebay Dam and Reservoir Alternative Site," dated
November 1989. This report investigated a low head dam at the location shown on Figure
1. The estimated capital cost of the dam and hydroelectric facilities as presented in the
November 1989 report is $8,816,000. The annual operation and maintenance costs are
estimated at $100,000. The revenue generated from power sales was modeled in an internal
rate of return analysis.
1

1

COMBINED HORSETHIEF AND COLORADO RIVER EXCHANGE PROTECT
The Horsethief hydroelectric project could provide funds to finance the Colorado River
exchange alternatives as outlined herein. A water rights purchase price of $15,000,000 is
included in an internal rate of return analysis of the combined projects.
The capital costs for the alternatives are phased where applicable. The phasing includes
the construction of the diversion/pumping facilities and pipeline to the canals initially. The
reservoir and pipelines are constructed later (Alternatives 1, 2, 3, and 7). The internal rate
of return analysis is given for each alternative set in Appendix B.
Table 4 summarizes the internal rate of return for the Horsethief/Colorado River Exchange
alternatives. The interest rate is 10 percent with an inflation rate of 4 percent.