For assistance with any of the following resources:

Help Request Form



ILMINES screenshot
Instructions: 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. [...]
Gamma-Ray Logs Database screenshot
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. [...]
Illinois Historical Aerial Photo Cook County
Illinois Historical Aerial Photography on Geospatial Data Clearinghouse »On May 12, 1933, President Franklin Roosevelt signed into law the Agricultural Adjustment Act, which was originally administered by [...]
ILOIL launch screen capture
The Illinois Oil and Gas Resources mapping project enables on-line access to a large database of over 200,000 Illinois oil and gas well records. This database has been in development for many years by the Illinois State Geological Survey. [...]
ILWATER launch screen capture
The ISGS is an official repository for records of wells drilled in the state of Illinois. Paper records are archived for over 700,000 wells. Some of these records go back as far as the late 1800s. [...]
Seismometer output
<p>Your browser does not support iframes.</p>USGS Epicenter Map [...]
Public Land Survey System (PLSS)
Instructions: This web page will allow you to enter an Illinois address and determine its legal description to the section level-of-detail. [...]