FLOOD06660

• County: Douglas
• County: El Paso
• County: Elbert
• Community: Franktown, Parker
• Stream Name: Cherry Creek Watershed
• Basin: South Platte
• Title: Franktown Parker Tributaries fo Cherry Creek Watershed
• Date: 4/1/1960
• Prepared For: State of Colorado
• Prepared By: USDA Soil Conservation Service
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Although not evaluated, it is expected that the floodwater-
retarding and grade stabilization structures will have beneficial
effects on maintenance of the ground-water table and streamflows
by increasing the duration of flood flows.

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Benefits were evaluated and claimed only within the watershed.
In addition, there are downstream benefits, not evaluated, which will
accrue to the proposed project.

COMPARISON OF BENEFITS AND COSTS

The estimated installation cost of the proposed land treatment
measures for flood prevention (fire protection and control) and the
structural measures is ~826,739. This cost, when amortized over a
50-year period at 2.5 per cent interest, results in an annual equivalent
cost of $29,152. The average annual cost of operation and maintenance
is estimated at $4,679, making a total average annual cost of $33,831
(Table 6). ~~en the project is completely installed and operating,
the estimated average annual benefits will amount to $48,567 (Table 7).
This results in a ratio of average annual benefits to costs of 1.44 to
1.00.

ACCOMPLISHING THE PLAN

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The measures outlined in the plan are to be installed during a
five-year project period. It is planned to complete the land treatment
phase of the program during the first three years of the project
period. The total amounts and costs of the measures to be installed
are shown in Table 1.

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Federal technical and financial assistance for carrying out the
works of irr,provement, as described in the work plan, will be provided
under authority of the Watershed Protection and Flood Prevention Act
(Public Law 566, 83d Congress, 68 Stat. 666) as amended.

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Loan assistance is available to sponsoring organizations and to
individual farmers and ranchers through the Farmers Home Administration,
at current government rates, to finance their share of watershed
works of improvement.

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The Extension Service will carry out the educational phase of
the program. Other Federal and State agencies concerned will
cooperate in establishing the works of improvement by providing
both technical and financial assistance.