Evaluation of Two-Stage Outlet Hydraulics

by Albert T. Brulo, Pennsylvania Dep of Environmental, Resources, Div of Waterways &, Storm Water Management, Harrisburg,
David F. Kibler, Pennsylvania Dep of Environmental, Resources, Div of Waterways &, Storm Water Management, Harrisburg,
Arthur C. Miller, Pennsylvania Dep of Environmental, Resources, Div of Waterways &, Storm Water Management, Harrisburg,



Document Type: Proceeding Paper

Part of: Water for Resource Development

Abstract: A two-stage detention basin is an effective storm water management tool. This type of basin is designed to control two storm events and it will tend to perform better than a single-stage basin along the entire frequency curve. The design of a two-stage basin, however, is more difficult because of complex hydraulics in the outlet structure. A two-stage computer design model is presented. The down-stream impacts of a two-stage detention basin are illustrated.

Subject Headings: Detention basins | Retention basins | Computer aided design | Hydraulic design | Computer models | Stormwater management | Water management | Storms

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