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.
The geologic maps, reports, and data files developed by the Division can be used by individuals, educators, industry, businesses, and government.