The Division of Geological Survey is the state's oldest natural resources agency, established by the Ohio legislature in 1837. The Division, known informally as the Ohio Geological Survey, has been in continuous operation since 1900 and is one of the seven originally chartered divisions of the Ohio Department of Natural Resources, which was created by the legislature in 1949.

• NEW: Geologic Assessment of the Burger Power Plant [6.25 MB PDF]
• NEW: Map of the Known Abandoned Underground Mines 
• NEW: New Educational Leaflet on Ohio's Coal [1.5 MB PDF]
• NEW: Historical book on Ohio's oil and gas industry available
• Illinois Earthquake
• GEOLOGIC RECORDS CENTER HOURS CHANGE [1.5 MB PDF]
• GeoFacts No. 25 - High Calcium Limestone In Ohio 
• 2007 Industrial Mineral and Coal Reporting Forms
• Bedrock Geologic Map of Ohio available on CD-ROM
• Ohio Geology 2007, No. 2 [1.24 MB PDF]
• Devonian Shale Data Available
• Internships
• 2006 data update for POGO (Production of Oil and Gas in Ohio)
• 2006 Report on Ohio Mineral Industries
• Carbon Sequestration & Ohio's Deep Test Well
• Topographic maps
• OhioSeis - The Ohio Seismic Network