Stormwater Review Projects


The Rules of the Washtenaw County Water Resources Commissioner govern the design of stormwater management systems within certain new development and redevelopment projects.

The general standards will be applied in the review of the following: 

  • Subdivisions under Act 288 of the Public Acts of 1967, as amended.
  • Site Condominium plans prepared under P.A. 59 of 1978, as amended, where local government ordinances require.
  • Mobile home plans prepared under P.A. 96 of 1987. 
  • Applications for permits to discharge to a county drain under P.A. 40 of 1956, as amended. 
  • Review of stormwater system plans in other classes of developments or re-developments when requested by local governments.

The procedures, standards, and recommendations outlined in the Rules and Design Standards are for these purposes.

View the full Rules and Design Standards. 

About the Pre-Application Meeting

A Pre-Application meeting is required prior to the design and construction of a site. The meeting must be attended by the design engineer and the site owner/developer.

This meeting is to discuss:  

  • Rule requirements 
  • Changes and benefits of infiltration and green infrastructure 
  • The minimum soil boring/test pit requirements 
  • Best Management Practices (BMPs) proposed for use on the site
  • Maintenance concerns 
  • The stormwater outlet

Be prepared to provide the following information during the pre-application meeting

  • General Site Description 
  • Site Plan 
  • Topography 
  • Land Cover 
  • Other pertinent features (natural or man-made) 
  • Soil types - (Soil survey; well/septic records) 
  • Potential locations for infiltration BMPs 
  • Geology and  hydrology information including estimated  groundwater table elevation

Pre Application Meeting Request for Stormwater Review Projects

  1. Applicant Information
  2. Site Owner Information
  3. If different than the site owner. 

  4. Project Information
  5. Leave This Blank:

  6. This field is not part of the form submission.