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Estimating Detention Pond Efficiency by a Derived Distribution Approach

by S. L. Yu,
D. Li,
B. G. Hwang,



Document Type: Proceeding Paper

Part of: Engineering Hydrology

Abstract:

The paper describes a continuation effort by the first two writers in attempting to obtain a derived distribution for the outflow pollutant mass flexes from a wet detention pond. The derivation was based on assumed probability distributions for the build-up of pollutants on land surfaces; the magnitude of rainfall runoff and the amount of pollutant washoff by runoff. The outflow quantity and quality were computed by using a completely-mixed model for the detention pond. The expected values of the input and outflow masses of pollutants can then be used to estimate long-term average removal efficiency of the detention pond. The results will be useful for the determination of design guideline for wet detention ponds.

Subject Headings: Water pollution | Detention basins | Outflow | Water quality | Soil pollution | Runoff | Water conservation

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