What is a bioswale? What does a bioswale do?
January 14, 2022
A bioswale is an oversized ditch where the bottom portion is filled with soil that allows a portion of the water to absorb or infiltrate into the soil downward. It helps filter runoff to improve its quality and reduces the amount of stormwater runoff. The benefit of bioswales is that they still convey the water from a road, building, or other impervious surface to a stream or lake but at the same time it can treat a portion of the water to improve its quality. Bioswales are typically planted or sodded to prevent erosion within the channel as well.