Long-Term Performance of Wet Detention Ponds

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by Agustin E. Maristany,

Document Type: Proceeding Paper

Part of: Water Management in the '90s: A Time for Innovation

Abstract: Wet detention is a technology which has been successfully applied in recent years to improve stormwater runoff quality in urban areas. Since most systems have a short operational history, their long-term performance has been questioned. There is speculation that once these systems reach a state of dynamic equilibrium, nutrient removal may decline due to the reduced nutrient uptake of a mature ecosystem. This paper sheds some light on the subject by comparing the performance of relatively new wet detention systems to a case study of Lake Munson, a wet detention system which has received wastewater effluent and runoff discharges for over 30 years. Long-term removal rates for Lake Munson compared favorably with rates reported for relatively new systems.

Subject Headings: Detention basins | Retention basins | Lakes | Nutrients | Water quality | Stormwater management | Runoff | Equilibrium | Light (artificial) | Case studies | North America | Florida | United States

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