Not all rain and snow that falls on the land soaks into the soil. When storms occur and the soil becomes saturated, the excess water runs off. As stormwater flows over bare ground, driveways, lawns, and sidewalks, it picks up silt, chemicals, and other pollutants. Polluted runoff is the greatest threat to clean water. The SWCD works with cities, municipalities and other units of government to reduce stormwater from entering our streams, rivers, and lakes. Click the link below for more information.