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GIS/Mapping Division  

Environmental Map Gallery

There are three ways to obtain Environmental Maps:

  • Click the links below to view and download an Adobe Acrobat PDF file online at no charge.
  • Use Maps Online to view detailed tax parcel reports, aerial photography and environmental data as well as to print customized maps.
  • Order paper copies of the environmental maps below for a fee.

View and Download

Wetland Inventory (LCWI) Maps

These maps show environment features such as the Lake County Wetland Inventory (LCWI), ADvanced IDentification (ADID) sites, and hydrologic unit boundaries on a political township basis. High resolution (1" = 100') orthorectified aerial imagery captured in April 2002 was used as the base for this update.  Other data used as reference for this update include: 2004 SOIL SURVEY GEOGRAPHIC (SSURGO) DATABASE FOR LAKE COUNTY, IL - U.S. Department of Agriculture, Natural Resources Conservation Service; HYDROLOGY2002 - Lake County GIS/Map Division; 2' topography (CONTOURS) - Lake County GIS/Map Division; and various years of historical aerial photography for clarification.  By using the more recent higher resolution photography, the resulting updated wetland boundaries are more accurate then the original boundaries published in 1993.

To access an individual district map click on a district below in the list or on the map. The maps are in Adobe Acrobat PDF file format, some files are large and may take awhile to view. These maps are intended to be printed at approximately 34" x 56" and if printed at 8-1/2 x 11 will not be very legible.

Help with PDFs

Having trouble viewing or printing the PDF? Read this web page.

Ordering Paper Maps

Paper copies of the same environmental maps are available for purchase.

Order Form


These maps were published in 2009.


LCWI, ADID, hydrologic unit boundaries, roads, major water bodies, railroad lines, township and section lines. Annotation includes: hydrologic unit code, municipal names, lake names, road names and railroad names.


1 inch = 1,000 feet


Varies depending on the shape of the township.


Color map $10.00

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