How does it work?

Bioretention areas are used to remove a wide range of pollutants and can help reduce stormwater runoff flow rates.  They are commonly used in parking lot islands or in small areas of a developed site.

Bioretention areas use vegetation such as shrubs, trees and grasses to filter and treat stormwater runoff and are modeled after the biological and physical characteristics of a terrestrial forest or meadow ecosystem.  Stormwater runoff may be directly diverted to bioretention areas overland or through a stormwater drainage system.

Bioretention at the Science Museum of Virginia

The Museum is installing multiple bioretention areas in the islands located throughout the front side parking lot. Bioretention areas are indicated by blue arrows. Red lines indicate water drainage. Notice the amount of rainwater that is redirected into the bioretention areas and tree box planter sites.