What is impervious surface?

Any hard or disturbed surfaced area that either prevents or slows down the natural entry of water into the soil. Rooftops, buildings, streets, parking lots, sidewalks, asphalt, concrete, other paving, driveways, compacted gravel, patios, artificial turf and storage areas are all examples of impervious surfaces. These improvements affect natural infiltration, create more runoff, increase the rate of runoff and alter runoff patterns of stormwater that drains from an area.

Show All Answers

1. What is Stormwater?
2. What is Non-point source pollution?
3. How do nutrients such as nitrogen get into stormwater?
4. Does stormwater get treated at the waste water treatment plant?
5. What is impervious surface?
6. Why do we need to manage stormwater runoff?
7. How is stormwater pollution managed?
8. Why are BMP’s required for new development?
9. What types of pollutants are found in the storm drain system?
10. How much are fees and how can I pay?
11. I need Help! Who do I call?