Pervious concrete is a porous medium that allows storm water to drain from the surface to the underlying base and soil structures. It is comprised of a gap graded aggregate with little to no sand, creating a concrete with a void structure that maximizes stormwater infiltration and provides a low impact development alternative to overland drainage designs. Increasingly, porous pavements are being recognized by local regulations as a best management practice for stormwater control.
When properly maintained, pervious concrete pavements present a long-lasting alternative for applications like parking lots, alley ways, and low volume roads. Below are several key resources and documents on pervious concrete pavement: