WSP02645

• File Number: 5700
• Description: Flood Protection Section - Flood Control Projects
• State: CO
• Basin: Statewide
• Date: 7/1/1985
• Author: BRW Inc - WRC Engine
• Title: Feasibility Study for the Cherry Creek Basin Drainageway - for Cherry Creek Basin TAC and Parker-Jordan Metropolitan District
• Water Supply Pro - Doc Type: Report/Study

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4. Review and utilize hydrology developed by U.S. Army Corps of
Engineers, and hydraulic calculations for the f10odplain/f100dway by
Greiner Engineering Sciences.

5. Complete the hydraulic analysis of Cherry Creek to determine the
capacity and general condition of all drainage features.

6. Defi ne drai nage probl ems and flood hazards for the purpose of
formulating alternatives.

7. Prepare hydraulic calculations to evaluate the best alternative
plans.

8. Rev i ew and evaluate impacts of present Federal Emergency Ma nagement
Agency (FEMA) policies.

9. Consider operation and maintenance aspects of the best alternatives.

10. Perform a qual itative analysis of the river morphology and
sedimentation characteristics.

11. Consi der impact of each alternative on the water qua 1 ity in the
basin.

12. Conduct a benefit/cost analysis for the alternatives.

13. Prepare a report summarizing the above work.

During the course of the work, two major changes to the scope of services
occurred. First, the benefit/cost analysis effort (item 12) was reduced from
that specified by the contract due to the problems associated with identifying
land values for each parcel. Alternatives were compared on the basis of costs
and a qualitative analysis for each benefit was performed to aid in the review
of the a lternat i ves. Second, due to the potent i al impact of the selected
alternative on the existing Aurora well field and other wells in the area, the

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