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


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: Detention basins | Retention basins | Runoff | Water pollution | Hydrologic models | Water quality | Water conservation | Surface water

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