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111. National Wetlands Inventory: Illinois, 1987

1980. U.S. Fish and Wildlife Service, Illinois Department of Natural Resources, and Illinois Natural History 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...

112. 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...

113. 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...

114. U.S. Geographic Names Information System (GNIS): Illinois Portion, 2006

1974. U.S. Geological Survey. This metadata document is abstracted from the GNIS metadata provided with the original data, with some ISGS-specific information added. The origina...

115. County Boundaries: Illinois, 2003

1968. 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...

116. PLSS Indian Treaty Boundary Lines: Illinois, 2003

1968. 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...

117. PLSS Townships: Illinois, 2003

1968. 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 ...

118. 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...

119. 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...