What is stormwater runoff?


Stormwater runoff is the water that flows off roofs, driveways, parking lots, streets and other hard surfaces during rain storms.  Stormwater runoff is also the rain that flows off grass surfaces and wooded areas that is not absorbed into the soil.  The runoff that is not absorbed into the ground pours into ditches, culverts, catch basins and storm sewers.  It does not receive any treatment before entering the streams and lakes.  

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1. What is stormwater runoff?
2. What is stormwater pollution?