Statewide Downloadable Maps
Bedrock Geology Map
This map depicts the bedrock geology of Illinois. It map may be
purchased for $10.00 plus S&H by contacting the
ISGS Information Office.
More information.
Coal Industry Map
This map shows the extent of Illinois' coal deposits; surface and underground mines, both active and inactive; coal transporation; and major coal-burning utilities. Download a PDF version of this map. (Large file size: 23.2 MB) A 30" × 50" version of this map may be purchased by contacting the ISGS Information Office.
Coal Maps
Link to all downloadable 8.5 x 11-inch size coal maps.
Drift Thickness Map
Drift is the sequence of unconsolidated materials that overlies the bedrock throughout most of Illinois. This map shows the thickness these glacial and postglacial deposits, which include river, beach, wind, and lake water deposits, as well as glacial deposits of the Wisconsin, Illinois, and pre-Illinois episodes. View a larger image or download a page-size PDF version of this map.
Land Cover Map
The Illinois Land Cover map was produced in resonse to the need for current,
detailed information about the land, the raw material of Illinois. Such
information is essential to ensure wise land-use decisions and good land
stewardship. The map was produced from the computer-assisted
classification and interpretation of Landsat 5 Thematic Mapper and Landsat
7 Enhanced Thematic Mapper satelite imagery. The imagery was aquired
during key seasonal periods of 1999 and 2000. Analysis of this imagery
produced twenty-three land cover categories.
More information or
download a PDF version
of this map.
Loess Thickness Map
Loess is windblown silt that blankets the surface of large areas of Illinois. This map shows the thickness of loess deposits. View a larger image or download a page-size PDF version of this map.
Illinois Surface Topography
This computer-generated map shows the elevation of the surface of the state. View a larger image or download a page-size PDF version of this map. (Large file size: 1.4 MB) A 36" × 64" version of this map may be purchased by contacting the ISGS Information Office.
Satellite Image Map of Illinois
This view of the state was created from images captured from Earth orbiting satellites. View a larger image or download a PDF version of the map. (Large file size: 12 MB) The original version, a 38" × 52", 1:500,00-scale false-color map created in 1985, may be purchased by contacting the ISGS Information Office.
Physiographic Divisions of Illinois
A map showing the types of topographic regions of the state. View a larger image or download a page-size PDF version of the map (531 KB).
End Moraines of the Wisconsin Glacial Episode
Wisconsin Episode moraines arc across northern Illinois and indicate the temporary stationary positions of the edge of the glacial ice front as the ice receded. View a larger image or download a page-size PDF version of the map (494 KB).
Quaternary (Ice Age) Deposits
This map shows the location of postglacial and late glacial deposits such as river, beach, wind, and lake water deposits as well as other materials deposited during the Wisconsin, Illinois, and pre-Illinois episodes. View a larger image or download a page-size PDF version of the map (631 KB).
Illinois Counties
The counties of Illinois are shown on this map. View a larger image or download a page-size PDF version of the map (342 KB).
Generalized Illinois Geologic Column
This column shows the layers of geologic materials found in Illinois. View a larger image or download a page-size PDF version of the stratigraphic column (406 KB).
Updated 05/31/2012 SLD

