Parks & Open Spaces


Advanced Identification of Wetland Disposal Areas (ADID)

Under Federal law, Federal and State regulatory agencies are empowered to identify, in advance, those wetland areas which they collectively determine to be inappropriate for the disposal of fill and dredged materials. These determinations are made jointly in Southeastern Wisconsin by the U.S. Department of the Army, Corps of Engineers, the U.S. Environmental Protection Agency, and the Wisconsin Department of Natural Resources. SEWRPC provides technical assistance to these agencies in preparing these useful maps.

Maps showing the areal extent of ADID wetlands in Southeastern Wisconsin are available in PDF format for each county:  


ADID wetlands can also be viewed in the ADID Wetland Viewer, a mapping tool that displays 2005 ADID wetlands, primary environmental corridors, and color orthophotography.


  Any questions concerning this matter should be addressed to:

Thomas M. Slawski, Ph.D.
Chief Biologist
Southeastern Wisconsin Regional Planning Commission
P. O. Box 1607
Waukesha, WI 53187-1607

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Southeastern Wisconsin Regional Planning Commission


W239 N1812 Rockwood Drive
P.O. Box 1607
Waukesha, WI 53187-1607


Monday - Friday
8:00 a.m. - 4:30 p.m.


Phone: (262) 547-6721
Fax: (262) 547-1103

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