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1. 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...
2. 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...
3. Buried Bedrock Surface: Illinois, 2004
1994. Herzog, B.L.. B.J. Stiff, C.A. Chenoweth, K.L. Warner, J.B. Sievering, C. Avery. The Buried Bedrock Surface of Illinois map represents the first revision of the bedrock topography map since the second edition was published by th...
4. 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...
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 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...
7. Height Modernization (ILHMP) LiDAR Data: Alexander County, Illinois: 2011
2011. Wilson & Company, Inc. This dataset consists of modified FEMA-grade LiDAR point cloud data for the Illinois River floodplain in the following pools: Marseilles Pool (only...
8. Height Modernization (ILHMP) LiDAR Data: Bond County, Illinois: 2015
2015. 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. Height Modernization (ILHMP) LiDAR Data: Boone County, Illinois: 2007
2007. This data set was developed for the United States Geological Survey. by Sanborn Mapping. Provide FEMA compliant elevation, topography and contour map of Boone County, Illinois. Provide Bare Earth DEM (vegetation removal) of Boone County...
10. Height Modernization (ILHMP) LiDAR Data: Bureau County, Illinois: 2015
2015. Surdex Corporation. This project involved fixed wing aerial LIDAR data collected at a contracted point spacing of 0.70 meters for the Illinois County of Bureau totalin...