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Illinois Geology - Map of Illinois

Illinois Rivers - Illinois Earthquakes - Illinois Rocks & Minerals

Illinois Geographic Resources

Illinois Satellite Image

Illinois Geology in the News

USGS Podcast: New Madrid Earthquakes of 1811-1812: “The third and probably the most widely felt...

Mineral Clubs and Organizations Worldwide: The-Vug.com has an impressive listing of mineral clubs...

Roadside Geology Guides: Since 1972 the “Roadside Geology” series has provided...

Supersized Topographic Maps: The folks at MyTopo.com are now printing supersized...

Local Emergency Management Agencies: Ready.gov is a website that connects visitors to...

Wall Maps of US States: Raven Maps are beautiful examples of shaded-relief wall...

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Illinois River Levels

USGS has a clickable map of Illinois rivers and streams that gives you access to real-time river levels throughout Illinois. River stage, discharge and other information can be accessed online. Or view a lake and river map of Illinois.

Illinois Geography Statistics

Area of Illinois: 55,584 sq. miles

Illinois Population: 12653544

Highest Point in Illinois
Charles Mound at 1,235 feet feet

Lowest Point in Illinois
Mississippi River at 279 feet

There are 102 counties in Illinois

Illinois Earthquakes

The National Earthquake Information Center maintains an Illinois earthquake map and an archive of Illinois earthquake information.

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