Welcome to the ISGS Resources Site

Explore to find commonly requested ISGS maps and data.

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Popular Applications

geophysics

Geophysics Data Viewer

An application created to make the geophysical data acquired by the Illinois State Geological Survey available to the public, scientists, and policy makers.
GIS map crop of mines

ILMINES

The Coal Mines in Illinois Viewer illustrates a general depiction of underground mining in the state.
gis crop

ILOIL

The Illinois Oil and Gas Resources map (ILOIL) provides online access to oil and gas related wells.
gis screen

ILWATER

The Illinois Water and Related Wells map (ILWATER) provides access to water and monitoring wells, engineering borings, and outcrops online.
layered rock face

ILSTRAT

The Online Handbook of Illinois Stratigraphy wiki (ILSTRAT) provides the most up-to-date information on the stratigraphy of Illinois.
section lines

PLSS

The Illinois Public Land Survey System (PLSS) lets users enter an Illinois address to determine its township, range, and section description.
historical aerial image

ILHAP

Illinois Historical Aerial Photography (ILHAP) is an interactive map created to help locate historical aerial photographs.
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Access Data from ISGS Research

Visit the Illinois Geospatial Data Clearinghouse to download published data.