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Design and Evaluation of Storm Water Detention Facilities Using a Design Storm and Probable Maximum Storm

by Rocky J. Keehn, Short-Elliott Hendrickson Inc, United States,
Mark L. Lobermeier, Short-Elliott Hendrickson Inc, United States,



Document Type: Proceeding Paper

Part of: Soil Properties Evaluation from Centrifugal Models and Field Performance

Abstract:

When designing a storm water detention facility, both a design storm (DS) and a probable maximum storm (PMS) should be considered. The DS is used to design the facility. The PMS is used to set a freeboard elevation. Sensitivity analysis using the TR-20 program was utilized to evaluate the DS and PMS as part of the Roseville, Minnesota Surface Water Management Plan (SWMP). The Roseville SWMP also demonstrates how the DS/PMS method provides a cost effective approach for managing storm water runoff while providing a sufficient protection level for the given recurrence interval.

Subject Headings: Stormwater management | Storms | Sensitivity analysis | Building design | Surface water | Runoff | Water management | Minnesota | United States

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