WSPC01331

• File Number: 5000.100
• Description: Flood Protection Section - Coal Creek Project
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 3/6/1975
• Author: Unknown
• Title: Staff Interim Report - Coal Creek Project
• Water Supply Pro - Doc Type: Report/Study

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002250

1.

Conveyance system from South Boulder Creek to Coal Creek.

The project plan as predicated almost entirely upon importations

of water from South Boulder Creek, Without this importation, con-

struction of the proposed Coal Creek Dam would be a futile and

expensive exercise. A definite plan and estimated cost for a convey-

ance system from South Boulder Creek to the proposed Coal Creek

Reservoir is therefore a requirement prior to the adoption of any
final plan.

2. Acquisition of additional water rights.
The project report states that the safe annual yield of all the

water rights now owned or under option to the various Coal Creek

entities is only 2,755 acre-feet. In critical years, this yield is

not sufficient for the existing population. To construct a relatively

.

large reservoir with only a small amount of water initially available

is not a sound business practice,

The average annual yield of existing community rights is esti-
mated at 4,320 feet. To this is added an estimated 3,810 acre-feet
which is anticipated to become available as a result of the conversion
of all irrigated lands in the service area to urban development. The
contemplated agricultural rights are for the most part junior rights
and in critical years would provide no water. The total average annual
yield from all rights contemplated to be available to the project is
8,130 acre-feet, Through holdover reservoir storage, the critical
years can be bridged to some extent. However, the reservoir operation
studies clearly show that all the existing and contemplated water rights
would not produce the required water supply. The deficiency is about
3,000 acre-feet annually,

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