Low Impact Development (LID) is an innovative, ecosystem-based approach to land development and stormwater management. The LID philosophy is modeled after nature: manage rainfall at the source.
LID's goal is to mimic a site's natural hydrology by using design techniques that allow water to soak into the ground, filter, store, evaporate, and detain runoff close to its source, resulting in a 'hydrologically functional' landscape and a protected watershed. Techniques are based on the premise that stormwater management should not be seen as stormwater disposal. LID is a versatile approach that can be applied equally well to new development, urban retrofits, and redevelopment / revitalization projects.