High Quality Aquatic Resources - Advanced Identification of Wetlands (ADID)

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 DuPage County, Illinois

The DuPage County GIS Viewer shows critical wetlands

 Kane County, Illinois

Kane County ADID Maps by Township

Please note that the color versions have aerial photographs and large file sizes. To view the color versions, you may need to download the file to your computer (right click, and save target as...)


Aurora (color) Batavia (color) Big Rock (color)
Blackberry (color) Burlington (color) Campton (color)
Dundee (color) Elgin (color) Geneva (color)
Hampshire (color) Kaneville (color) Plato (color)
Rutland (color) St. Charles (color) Sugar Grove (color)
Virgil (color)
 Lake County, Illinois
 McHenry County, Illinois

McHenry County, Illinois Advanced Identification of Wetlands

  1. Public Notice of Advance Identification of Wetlands (ADID) Study Finalization
  2. ADID Study, Final Report, December 1998
  3. McHenry County Weblink
  4. McHenry County GIS Viewer - Turn on the wetland layer and look at the legend for ADID maps

As part of the ADID process, a geographical information system (GIS) was developed by the Chicago Metropolitan Agency for Planning (CMAP).

McHenry County ADID Maps by Township  

Each map has a legend that lists aquatic resources by a number. The following resource categories were included in the ADID designation: High quality streams, High quality lakes, High quality habitat wetlands, and High functional value wetlands.


Alden Township

Algonquin Township

Burton Township

Chemung Township

Coral Township

Dorr Township

Dunham Township

Grafton Township

Greenwood Township

Hartland Township

Hebron Township

Marengo Township

McHenry Township

Nunda Township

Richmond Township

Riley Township

Seneca Township