What is stormwater?

Stormwater is rain and melting snow that runs off surfaces that cannot readily absorb water. These surfaces include rooftops, pavement, compacted gravel lots, and even frozen ground. Stormwater runoff picks up pollution, can cause erosion, and flooding problems. These problems occur when we alter the land and change the way water moves through the landscape.

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1. What is stormwater?
2. How does stormwater become polluted?
3. What are ways to help prevent stormwater flooding and pollution?