A definition of stormwater is —- surface water in abnormal quantity resulting from heavy falls of rain or snow.

On the EPA website for the NPDES program,

it is stated that “Stormwater runoff is generated from rain and snowmelt events that flow over land or impervious surfaces, such as paved streets, parking lots, and building rooftops, and does not soak into the ground.”  Further, “The runoff picks up pollutants like trash, chemicals, oils, and dirt/sediment that can harm our rivers, streams, lakes, and coastal waters.”On this site, we are providing some information about stormwater, where it originates, how to manage it, and what can be done to prevent or reduce the volume of stormwater entering local waterbodies.






Enviroscape Videos (Non-point Source Watershed Model)