Design Accuracy of Stormwater Detention Basins

by Richard H. McCuen, Univ of Maryland at College Park, Dep of Civil Engineering, College, Park, MD, USA,

Document Type: Proceeding Paper

Part of: Water for Resource Development


While the stormwater detention basin is the most frequently used method for controlling runoff from developing areas in the United States, there appears to be no statement of the probable accuracy of the designs. The primary sources of inaccuracy are the hydrologic models used to compute the design discharges and the hydraulic/hydrologic models used to size the detention facility. Using existing models, measures of the biases and inaccuracies of design are assessed using a probabilistic modeling approach. The results suggest that well formulated stormwater management policies can substantially reduce design inaccuracies.

Subject Headings: Stormwater management | Detention basins | Retention basins | Computer models | Hydraulic design | Hydraulic models | Model accuracy | Hydraulic structures | United States

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