WSP11761

• 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 - Summary Report
• Water Supply Pro - Doc Type: Report/Study

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GREEN MOUNTAIN EXCHANGE PROJECT: For Replacement Reservoir alternatives,
analyses were made of Wolcott Reservoir and combinations of reservoirs including Wolcott and Red
Mountain, Wolcott and Azure, Red Mountain and Una, and Wolford Mountain A' and Una Reservoirs.
The Green Mountain Exchange Project is Illustrated on Figure S.3 at the end of this report.

Two of the reservoir combinations, Red Mountain with Una, and Wolford Mountain A' with

Una, are shown on Table S.1 as being capable of fully replacing the 144,000 af yield of Green

Mountain Reservoir. Other reservoirs and reservoir combinations would only partially replace Green

Mountain Reservoir. In these cases, a portion of the capacity of Green Mountain Reservoir would

continue to serve its original function.

In order to compare alternatives in this study, it was assumed that the yield of the

Replacement Reservoir(s) could be exchanged for an equal quantity of yield from Green Mountain

Reservoir. The actual quantities of exchange may differ from this Study depending upon the

institutional arrangements between the interested parties.

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TABLE S.5

CONVEYANCE SYSTEM
SUMMARY OF ESTIMATED INVESTMENT COSTS
($1,000,000)

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ITEM

8,000
af/mo

12,000
af/mo

Land Acquisition
Pipeline
Reservoirs
Pump Stations
Surge Control
Subtotal of Direct Costs
Contingencies (25%)
TOTAL DIRECT COST
Engineering, Legal, Administration (20%)
TOTAL CONSTRUCTION COST
Interest During Construction (4 yrs.)
TOTAL CAPITAL COSTS
Financing & Reserve
TOTAL INVESTMENT COST

$ 0.8
62.7
0.9
15.3
2.9
$ 82.6
20.7
$103.3
20.7
$ 124.0
20.0
$144.0
21,5
$165.5

$ 0.8
77.0
1.1
16.6
3.1
$ 98.6
24.7
$ 123.3
24.7
$148.0
24.0
$ 172.0
26,0
$ 198.0

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