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Storm Water

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    Storm water and related links

    The links below connect to additional information about storm water management and other relevant topics.

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    What is Storm Water Runoff?

    Storm water runoff is rain and melting snow that flows off building rooftops, driveways, lawns, streets, parking lots, construction sites, and industrial storage yards. Developed areas are covered by buildings and pavement, which do not allow water…

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    Salt and storm water

    Wisconsin winters cause us to rely heavily on salting our roads, parking lots and sidewalks. But high salt use causes Wisconsin’s lakes, streams and drinking water to suffer. The growing salt problem threatens our fish and other aquatic life, and…

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    Storm water runoff regulation

    Congress amended the federal Clean Water Act in 1987 to control storm water pollution. In 1990, federal regulations required owners of storm water pollution sources, including many industries, municipalities and construction sites, to have National…

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    Why is Storm Water Runoff a Problem?

    Storm Water Runoff is Not Clean Water Storm water runoff carries pollutants that can seriously harm our waters. These types of pollutants are commonly found in storm water runoff.

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    What you can do to help

    Certain activities like walking your dog or driving your car can leave pollutants on the ground that can wash off in rain water. All the hard surfaces you use every day, such as parking lots, driveways, rooftops, and sidewalks, dramatically…

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    Photo Gallery: Storm Water Best Management Practices

    Best Management Practices (BMPs) improve water quality, protect downstream water bodies, reduce flooding, and can be aesthetically pleasing. This photo gallery provides examples of BMPs for commercial, residential, and industrial sites.

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    Frequently Asked Questions (FAQ)

    General storm water questions My land is being flooded by water draining from another property. Can the DNR do something about it? No. The DNR’s authority is limited to regulating the pollutants carried in storm water runoff and it does not…

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    Learn More About Storm Water Runoff

    Urban storm water runoff contains pollutants from roads, parking lots, construction sites, industrial storage yards and lawns. Learn how these pollutants affect water quality, what Wisconsin is doing to reduce pollutants in runoff, and how you can…

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    Summary of SIC codes required to apply for an industrial storm water permit

    This is a summary from Subchapter II of NR 216, Wis. Adm. Code. Refer to NR 216 for additional information on Standard Industrial Classification (SIC) Codes. (2) CATEGORIES. This subchapter applies to discharges originating from industrial…

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