WSP12030

• File Number: 8441.400
• Description: Colorado Big Thompson Project - Reports
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 4/1/1987
• Title: Joint-Use Reservoir and Green Mountain Exchange Projects - Final Report
• Water Supply Pro - Doc Type: Report/Study

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TABLE S.5

COST OF EXCHANGE PROJECT WATER
AVAILABLE TO ROBERTS TUNNEL

PROJECT 1)
REPLACEMENT
RESERVOIR(S)

AVERAGE 2)
CONVEYANCE
SYSTEM FLOW
(1000 af/yr)

EXCHANGE
PROJECT
YIELD
(1000 af/yr)

TOTAL 3)
COST
PER YEAR
($1,000,000)

UNIT4)
COST OF
WATER
($/af)

Wolcott w/diversion from
Eagle & Colo.

113

$ 93.8

$ 790

119

Red Mountain & Una

119

124

68.4

550

Una & Wolford Mountain A'
w/Colo. diversion

119

, 124

64.7

520

Azure & Wolcott
w/Eagle diversion

87

101

61.4

610

Red Mountain & Wolcott
wlEagle diversion

81

93

62.7

670

1) Diversion involves pumping from Colorado R. or Eagle R. or both rivers, as cited.

2)

The 8000 af/mo conveyance system was combined with the Azure-Wolcott and Red
Mountain-Wolcott replacement reservoirs. The 12,000 af/mo system was combined with the
Wolcott/Eagle-Colo., Red Mountain-Una and Una-Wolford A' replacements reservoirs.

3)

Total cost per year is the sum of yearly debt service, average electrical power and other
operating costs from Table S.3for the listed reservoir(s) and the corresponding conveyance
system.

4)

Estimated cost per acre-foot of project water delivered in a year of average operating costs.

In addition to supplying water to Dillon Reservoir by pumping from Green Mountain

i
! Reservoir, the water exchange concept would allow water to be retained in Dillon Reservoir that
i

under current water rights priorities must be released to Green Mountain Reservoir. It should be

noted that the estimated average annual project yields differ from the firm yields expected from the

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