Changes

The use of natural drainage picks up where stormwater leaves impervious areas.  Rather than collect and move stormwater rapidly to a centralized location for detention and treatment, the goal of these strategies is to take advantage of undisturbed vegetated areas and natural drainage patterns (e.g., small headwater drainage features).  These strategies will extend runoff flow paths and slow down flow to allow soils and vegetation to treat and retain it.  Using natural systems or green infrastructure to provide communities with environmental services is often more cost effective than traditional drainage systems, and they provide more ancillary benefits.

The use of natural drainage picks up where stormwater leaves impervious areas.  Rather than collect and move stormwater rapidly to a centralized location for detention and treatment, the goal of these strategies is to take advantage of undisturbed vegetated areas and natural drainage patterns (e.g., small headwater drainage features).  These strategies will extend runoff flow paths and slow down flow to allow soils and vegetation to treat and retain it.  Using natural systems or green infrastructure to provide communities with environmental services is often more cost effective than traditional drainage systems, and they provide more ancillary benefits.