Illinois County Geologic Maps (ICGM)

Map of Illinois showing counties in ICGM series

The Illinois County Geologic Map (ICGM) series was initiated in 2007. This series may include a variety of geologic theme maps, such as bedrock geology, surficial geology, geologic cross sections, three-dimensional models, major aquifers, aquifer sensitivity to contamination, and others. ICGM series maps are available for sale as hard copy and as free downloadable graphics through this Web site. The maps in this series are extensively reviewed internally and externally and comply with ISGS cartograhpic standards at the time of public release.

Bureau County
Henry County
Kane County
Lake County
Lee County
Monroe County (not shown on map)
St. Clair County

Other ISGS map Series

Kane County St. Clair County Lee County bureau 1 Henry County Lake County


Updated 06/19/2012 SLD

ILLINOIS STATE GEOLOGICAL SURVEY
615 E. Peabody
Champaign, IL 61820
217-333-4747
info@isgs.illinois.edu

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