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What is impervious surface area?

April 26, 2017area Impervious

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What is impervious surface area?

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An impervious surface is any hard surface that does not really absorb water and impedes the natural flow of water into the soil. In general, impervious surfaces include building roofs, parking lots, and basketball or tennis courts.

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Impervious surface area is hard surface, such as that found on rooftops, sidewalks, parking lots, and gravel or hard-packed dirt, which impedes the natural infiltration of stormwater into the ground.