WSP01174

• File Number: 8449.900
• Description: South Platte Projects - Bear Creek
• State: CO
• Basin: South Platte
• Date: 1/1/1968
• Author: USACOE
• Title: Bear Creek Basin, South Platte River and Tributaries, Colorado, Wyoming and Nebraska - Letter from the Secretary of the Army
• Water Supply Pro - Doc Type: Publication

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BEAR CREEK BASIN, SOUTH PLATTE RIVER AND TRIBUTARIES
COLORADO, WYOMING, AND NEBRASKA

REPORT OF THE CHIEF OF ENGINEERS, DEPARTMENT OF THE ARMY

DEPARTMENT OF THE ARMY
OFFICE OF THE CHIEF OF ENGINEERS
WASHINGTON. D.C. 20315

IN REPLY REFER TO

ENGCW-PD

15 January 1968

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 wildlife recreation. He esti-
mates 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 enhancement. The benefit-cost ratio
is 3.1. The Division Engineer concurs generally in the recommenda-
tions of the District Engineer but, in recognition of the possibility
that more detailed subsurface explorations 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,
including acquisition of lands to the maximum water line, 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.