Seal of Dane County County of Dane
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Dane County Land & Water Resources Department

Stormwater Management

Uncontrolled stormwater runoff can have adverse impacts on land and water resources. To reduce these impacts, a Stormwater Management Permit may be required for specific land disturbing activities occurring within Dane County, per Dane County Ordinance Chapter 14 (PDF).

Projects that require a Stormwater Management Permit often also require an Erosion Control Permit. More information about this permit can be found on the Erosion Control and Shoreland Erosion Control webpage.

Use our Permit Decision Tree (PDF) or Permit Info Fact Sheet (PDF) to help you understand permitting requirements, but please note that all permit determinations must be made in writing by our staff.

Stormwater Management Permit is required for any of the following:

  • Any development after August 22, 2001 that results in the cumulative addition of 20,000 square feet of impervious surface to the site
  • Recording a subdivision plat
  • Recording a certified survey map intended for commercial or industrial use
  • Redeveloping more than 4,000 square feet of an existing commercial, industrial, institutional or multifamily-use site
  • Other land development activities that the local approval authority determines may significantly increase runoff, flooding, soil erosion, water pollution or property damage, or significantly impact a lake, stream, or wetland area

View application materials below:

Before you apply, you may wish to review / complete:

Primary Tools

Additional Tools

Your project may also need a permit from another agency, common links are provided below. Please confirm permit requirements prior to beginning a project.

Department of Planning & Development

Wisconsin Department of Natural Resources