What is Green Infrastructure?

Green Stormwater Infrastructure (GSI) — also known as natural drainage — mimics nature by slowing or reducing polluted runoff (melting snow and rain) close to its source. GSI installations (like rain gardens or planted swales) collect and filter polluted runoff from roads, roofs, and parking lots by capturing and cleaning it before it harms our waterways. GSI helps our cities act more like a forest, wetland or prairie.