An infiltration basin is a shallow impoundment that is produced by either natural site topography or excavation in areas with suitable, permeable soils. It is designed to retain stormwater until it infiltrates into the soil. This is often done so that the water can recharge the aquifer and supply groundwater. Sometimes large developments use infiltration basins as a means for reducing runoff and its negative impacts downstream.
- Designed to retain the stormwater runoff until it is absorbed by the ground.
- Removes many pollutants and fine sediments.
- Recharges aquifer.
- Helps restore low flows to stream systems.
“Infiltration Basins,” The Stormwater Manager’s Resource Center, www.stormwatercenter.net
“Infiltration Basin,” Michigan, Department of Environmental Quality, http://www.michigan.gov/deq
Vegetation Infiltration Basin Detail: City of Portland 2004 Stormwater Management Manual