| − | A dry pond is a detention basin designed to temporarily store collected stormwater runoff and release it at a controlled rate through an outlet (MOE, 2003). Also known as infiltration basins or [[detention basins]] (according to their features), dry ponds are a grassed alternative to [[bioretention]] cells. Dry ponds may have a deep pool of water in the [[sedimentation|sediment]] forebay to reduce scour and resuspension of sediment, but do not have a permanent pool of water in the main basin. This permits the dry pond to be integrated into the landscape to be accessed and used as an amenity space. Dry ponds are recommended as [[flood control]] structures to accommodate occasional excess overflow downstream of other structural BMPs. Compared to wet ponds, dry ponds are less expensive to install, require less maintenance, and may involve less liability for the community (Fairfax County, 2025)<ref>Fairfax County. 2025. Understanding Stormwater Ponds: Wet Ponds, Dry Ponds and Stormwater Pond Retrofits. https://www.fairfaxcounty.gov/soil-water-conservation/understanding-stormwater-ponds</ref>. | + | A dry pond is a detention basin designed to temporarily store collected stormwater runoff and release it at a controlled rate through an outlet (MOE, 2003). Also known as infiltration basins or [[detention basins]] (according to their features), dry ponds are a grassed alternative to [[bioretention]] cells. Dry ponds may have a deep pool of water in the [[sedimentation|sediment]] forebay to reduce scour and resuspension of sediment, but do not have a permanent pool of water in the main basin. This permits the dry pond to be integrated into the landscape to be accessed and used as an amenity space. Dry ponds are recommended as [[flood control]] structures to accommodate occasional excess overflow [[Treatment trains|downstream of other structural BMPs]]. Compared to wet ponds, dry ponds are less expensive to install, require less maintenance, and may involve less liability for the community (Fairfax County, 2025)<ref>Fairfax County. 2025. Understanding Stormwater Ponds: Wet Ponds, Dry Ponds and Stormwater Pond Retrofits. https://www.fairfaxcounty.gov/soil-water-conservation/understanding-stormwater-ponds</ref>. |