Skip to content

County of Asotin

Regional Stormwater Program

Inform. Educate. Prevent.

Frequently Asked Questions

Stormwater is rain and snow melt that runs off surfaces such as rooftops, paved streets, highways, and parking lots. As water runs off these surfaces, it can pick up pollutants such as oil, fertilizers, pesticides, soil, trash, and animal waste. From here, the water might flow directly into a local stream, river, or lake. Or, it may go into a storm drain and continue through storm pipes until it is released untreated into a local waterway.