Bear Creek Basin, South Platte River and Tributaries, Colorado, Wyoming, and Nebraska

• Description: Bear Creek Basin, South Platte River and Tributaries, Colorado, Wyoming, and Nebraska
• State: CO
• State: WY
• State: NE
• Basin: South Platte
• Date: 4/12/1967
• Author: Cassidy, William
• Title: Bear Creek Basin, South Platte River and Tributaries, Colorado, Wyoming, and Nebraska
• Water Supply Pro - Doc Type: Report/Study

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IN REPLY REFER TO
ENGCW -PD
DEPARTMENT OF THE ARMY
OFFICE OF THE CHIEF OF ENGINEERS
WASHINGTON, D.C. 20815
SUBJECT: Bear Creek Basin, South Platte River and Tributaries, Colorado,
Wyoming, and Nebraska
TO: THE SECRETARY OF THE ARMY
1 . I submit for transmission to Congress the report of the Board
of Engineers for Rivers and Harbors, accompanied by the reports of the
District and Division Engineers, in partial response to a resolution of
the Committee on Public Works of the United States Senate, adopted
14 June 1956, concerning the advisability of constructing flood control
and related improvements in the South Platte River Basin, particularly
in the vicinity of and upstream from the city of Denver, Colorado.
2. The District Engineer recommends the construction of a
dam and reservoir on Bear Creek at a site about 8 miles above
the confluence of Bear Creek with the South Platte River at Denver,
Colorado, for flood control, general recreation, and fish and wild-
life recreation. He estimates the first cost of the improvement at
$21,000,000, of which $20,481,500 would be the net Federal cost
and $518,500 would be the non - Federal share of the separable cost
of the project allocated to recreation and fish and wildlife enhance-
ment. The benefit -cost ratio is 3. 1. The Division Engineer concurs
generally in the recommer dations of the District Engineer but, in
recognition of the possibility that more detailed subsurface explora-
tions may reveal the foundation conditions at the site to be unsuitable
for the recommended unlined spillway, recommends the inclusion in
the cost estimate of contingency items sufficient to cover the maximum
costs of spillway modification and additional foundation treatment if
found necessary during advanced planning. The estimated first cost
of the project thus modified is $29,800,000, of which $29,281,500
would be the net Federal cost. The non - Federal share of the project
costs would remain unchanged at $518,500, and the benefit -cost
ratio for the modified project is 2.2 .