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Finding Online Map Resources: Ohio Maps & Data

Geology Map Resources

Ohio Counties: these links provide pdf printable/ downloadable maps as well as GIS data related to Geology and Groundwater and other topics.

Geology GIS Data

For Ohio downloadable GIS data in shapefile and .e00 interchange formats, use this site to locate information by county and category. Not all data has been updated on the same schedule. Check the metadata for details.