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Illinois Geospatial Data Clearinghouse
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Search Results
101. Political Districts and Boundaries: Illinois, 2006 and 2007
1980. Various, by feature class. This feature dataset contains data layers that show political districts and boundaries in Illinois, including political townships, state representa...
102. Political Townships: Illinois, 2009
1985. Tom Heavisides, Office of Realty and Environmental Planning. This map shows political township boundaries of Illinois.
103. Potential of Agricultural Chemical Contamination of Aquifers, 2004: Illinois
1995. Donald A. Keefer, 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...
104. Public Land Survey System (PLSS) Boundaries: Illinois, 2003
1968. 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...
105. Quaternary Deposits: Illinois, 1979
1979. Illinois State Geological Survey. Digital representation of the Quaternary Deposits in Illinois map by Lineback (1979). Map scale is 1:500,000. Shows Quaternary deposits that lie at...
106. Quaternary Deposits: Illinois, 1996
1996. Barb Stiff. This feature dataset is a generalized version of Quaternary Deposits of Illinois. Updated to reflect the areal distribution of the Wedron and Mason...
107. Sinkhole Areas (an indicator of karst terrain): Illinois, 2004
1992. C. P. Weibel S. V. Panno. This feature class shows the distribution of areas that contain one or more sinkholes throughout the state of Illinois. Areas that contain sinkhole...
108. Soil Associations Map (500K): Illinois, 2004
1984. Illinois State Geological Survey. This is a polygon feature class showing soil associations in Illinois, from the General Soil Map of Illinois (Fehrenbacher, 1982). Created in 1984 ...
109. Stack-Unit Mapping of Geologic Materials to a Depth of 15 Meters: Illinois, 2004
1995. Illinois State Geological Survey. This is an SDE polygon feature class containing stack-unit map designations for Illinois. The primary source is ISGS Circular 542, Stack-unit Mappi...
110. State Boundary: Illinois, 2003
1968. Illinois State Geological Survey. This data set contains the Illinois state boundary in line and polygon format. There are two versions of the data included: one that includes the o...