1. Woodfordian Moraines of Illinois, 2004
1991. Illinois State Geological Survey. This is an SDE polygon feature class containing named Woodfordian moraines, or Wisconsinan end moraines, of Illinois. Scale is 1:500,000. The prima...
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2. Bedrock Geology: Illinois, 2005
2005. Illinois State Geological Survey. This feature dataset shows the distribution and extent of the bedrock geologic units within the State of Illinois, as depicted on the map Bedrock G...
3. Bedrock Geology of Illinois - Geologic Units, 2004
1996. Illinois State Geological Survey. This feature class shows the distribution and extent of the bedrock geologic units within the State of Illinois, as depicted on the Geologic Map of...
4. County Boundaries: Illinois, 2003
1968-1979. Illinois State Geological Survey. This data set contains Illinois county boundaries in line and polygon formats. The polygon attribute data include county name and number (FIPS) des...
5. Driftless Areas: Illinois, 2004
1994. Illinois State Geological Survey. This is a polygon feature class containing driftless areas in Illinois. These areas are analogous to areas of the state where the bedrock surface i...
6. Glacial Boundaries: Illinois, 1998
1998. Illinois State Geological Survey. Glacial boundary lines representing the extent of glaciation for major glacial episodes in Illinois. Data originally from Quaternary Deposits in Il...
7. Glacial Drift: Thickness and Character: Illinois, 2004
1994. Illinois State Geological Survey. This is an SDE feature dataset showing drift thickness in Illinois. Data are originally from ISGS Circular 490 by Piskin and Bergstrom (1975), Plat...
8. Height Modernization (ILHMP) LiDAR Data: Bond County, Illinois: 2015
2015. Illinois State Geological Survey. This Digital Terrain Model (DTM) data was produced all or in part from LiDAR information as of 2015. The LiDAR derived DTM covers Bond County, Illi...
9. Major Bedrock Valleys: Illinois, 2004
1994. Illinois State Geological Survey. This feature dataset shows continuous lines representing the lowermost elevations/locations of (buried) bedrock valleys in the state of Illinois. A...
10. Mosaic of Des Plaines Watershed, IL/WI - TerraSource Orthorectified Imagery, 2000
2000. ImageAmerica and Illinois State Geological Survey. Note: The original metadata file was written by ImageAmerica. There are a few additions by ISGS required for archival and access in the Survey's en...
11. Municipal Boundaries: Incorporated Places: Illinois, 2000
2006. US Census and Illinois State Geological Survey. This polygon feature class shows incorporated places and census designated places in Illinois as of the 2000 US census. The data are identical to t...
12. National Wetlands Inventory: Illinois, 1987
1980-1987. U.S. Fish and Wildlife Service, Illinois Department of Natural Resources, Illinois Natural History Survey, and Illinois State Geological Survey. This feature dataset contains wetlands and deepwater habitats in Illinois is of 1987 based on U.S. Fish and Wildlife Service National Wetlands Inve...
13. One-Hundred and Five-Hundred Year Floodzones for Unincorporated Areas: Illinois, 2006
1996. Illinois State Water Survey and Illinois State Geological Survey. This feature class was quickly assembled from old Arc/Info coverages to produce a general graphic image and has not reviewed or quality-controlled ...
14. Physiographic Divisions: Illinois, 2004
1993. Illinois State Geological Survey. This is an ESRI feature class showing boundaries for physiographic divisions in Illinois. Data are originally from ISGS Report of Investigations 12...
15. PLSS Indian Treaty Boundary Lines: Illinois, 2003
1968-1979. Illinois State Geological Survey. This data set contains Indian Treaty boundary lines from the Illinois Public Land Survey System. The nominal scale is 1:62,500. As of 2003, the dat...
16. PLSS Townships: Illinois, 2003
1968-1979. Illinois State Geological Survey. This dataset contains townships from the Illinois Public Land Survey System in line and polygon form. Line attributes identify state, township and ...
17. Political Districts and Boundaries: Illinois, 2006 and 2007
1980-2009. Illinois State Geological Survey. This feature dataset contains data layers that show political districts and boundaries in Illinois, including political townships, state representa...
18. Political Townships: Illinois, 2009
1985. Tom Heavisides, Office of Realty and Environmental Planning, Illinois Department of Natural Resources, and Illinois State Geological Survey. This map shows political township boundaries of Illinois.
19. Potential of Agricultural Chemical Contamination of Aquifers, 2004: Illinois
1995. Donald A. Keefer, and Illinois State Geological Survey. This is a statewide SDE feature dataset for evaluating the potential for contamination of shallow aquifers by pesticides and nitrate. The sources o...
20. Public Land Survey System (PLSS) Boundaries: Illinois, 2003
1968-1979. Illinois State Geological Survey. This data set contains Illinois Public Land Survey System (PLSS) boundaries and designations in line and polygon feature classes. THESE DATA HAVE P...