Stormwater Management

Uncontrolled stormwater runoff can have adverse impacts on land and water. To reduce these impacts, Dane County Ordinance Chapter 14 (PDF) requires a permit for specific land disturbing activities that occur in Dane County. Use the links below to 1) determine if you need a permit, 2) link to permit application materials and tools, and 3) find out more information about the permit

• Stormwater Management (PDF)
• Online Map Webpage (button below) links to the Land & Water Viewer online mapping application and tutorial videos. The viewer can be used to create a map(s) to submit with your permit application.
• Thermal Areas Webpage (button below) links to the Thermally Sensitive Areas & Thermal Model webpage which has information on how you can determine if your site it located within a thermally sensitive area.

Additional forms that may need to be submitted with your permit application(s):

• Stormwater Maintenance Agreement Affidavit (PDF)
• Release of Restriction Form (PDF)
• Applicant Authorization Form (PDF)
• Stormwater Management As-Built Certification (PDF)
  • Wet/Dry Basin Checklist (PDF)
  • Bioretention/Infiltration Checklist (PDF)
• Information on whether your site needs to meet redevelopment or new development standards (PDF)
• Recommended construction practices for infiltration facilities (PDF)
• Memo to Chapter 14 Permit Applicants explaining Financial Security Instrument requirement (PDF)
• Example Format for Letter of Credit for Chapter 14 Permit Applicants (PDF)
• Example Format for Letter of Credit for Chapter 14 Permit Applicants (Word)
• Example Format for Notarized Statement Authorizing an Applicant (PDF)

A 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