Data
The ISGS Geologic Mapping Program Gamma-Ray Logs Database uses an interactive map to allow users to view individual logs and standardized borehole location information for 19 counties in Illinois. [...]
The Coal Mines in Illinois Viewer illustrates a general depiction of underground mining in the state and will help determine the proximity of coal mines and underground industrial mines to your home or business. [...]
The Illinois Geospatial Data Clearinghouse is an established node of the National Spatial Data Infrastructure Clearinghouse Network. [...]
On May 12, 1933, President Franklin Roosevelt signed into law the Agricultural Adjustment Act, which was originally administered by the United States Department of Agriculture, Agricultural Adjustment Administration (USDA-AAA). Since the mid-1930s, the USDA-AAA, now the USDA Farm Services Agency, periodically acquired nationwide aerial photographs by county. These aerial photographs were originally used by the USDA-AAA to assess the nation's agricultural lands and served as the basis for the national soil surveys. [...]
Instructions: This web page will allow you to enter an Illinois address and determine its legal description to the section level-of-detail. [...]