The ODNR Division of Geological Survey has been mapping karst in Ohio since 2011 and has produced numerous publications and products to illustrate where and how karst forms in Ohio. Such research enables the Division to provide information to industry, government agencies, and the public at large for use in land-use planning and mitigating the impacts of karst on groundwater, infrastructure, and commercial and residential buildings and other structures.
These publications and products are available using the links in the sections below. For more information on karst formation in Ohio, visit the Sinkholes & Karst Geology webpage.
2019 Karst Annual Report: Karst at the Silurian-Devonian Contact in South-Central Ohio – The report includes notable features and unique characteristics of the study area, predominantly in Adams and Highland Counties, along with an updated summary of the statewide status from 2009 until now. This report marks a transition away from traditional mapbooks to a streamlined report of the fieldwork season that can be used in conjunction with our interactive web map.
Karst Interactive Map
Released in 2019, the Karst Interactive Map is a record of karst features found throughout Ohio that is updated regularly as mapping continues. Each datapoint links to a list of information about the feature, including location; feature type; notes and comments about the location or feature; and photograph(s), if available.
For detailed information about specific karst features or to check your location of interest for karst features, input the address information into the Address/Coordinate Search menu, and then click on the feature of interest. Also, the current Ohio karst GIS dataset can be downloaded (for use in GIS) via the introduction screen that appears when the map is first launched.
Technical Publications & Maps
The following publications offer detailed information, photos, and maps produced as a result of karst mapping conducted by the ODNR Division of Geological Survey. All files are in PDF format unless otherwise noted.
- Known and Probable Karst in Ohio (Map EG-1), scale 1:500K
- Karst Flooding in Bellevue, Ohio, and Vicinity—2008 (Map EG-5), scale 1:24K
- Karst of the Western Delaware County, Ohio, Region (OFR 2011-4)
- Karst of Springfield, Ohio (OFR 2012-2)
- Karst of the Bellevue Quadrangle and Portions of the Clyde and Castalia Quadrangles (OFR 2013-1)
- Karst of the Fireside Quadrangle and Portions of the Flat Rock and Clyde Quadrangles, Ohio (OFR 2014-1)
- Karst of the Hillsboro, New Market, New Vienna, and Leesburg Quadrangles, Ohio (OFR 2015-1)
- Karst of the Belfast and Sugar Tree Ridge 7.5-minute Quadrangles, Ohio (OFR 2016-4)
- Karst of the Sinking Spring 7.5-minute Quadrangle, Ohio (OFR 2017-2)
- Karst of Northern Portions of the Peebles and Jaybird 7.5-minute Quadrangles, Ohio (OFR 2018-3)
- Karst in the Lilley Formation, Peebles 7.5-minute Quadrangle, Ohio – Presented at Geologic Mapping Forum, Minneapolis, MN, April 10–12, 2019
- Assessing Sinkhole Complexity Over Time in the Karst Terrain of Delaware, Ohio – Presented at the GSA Annual Meeting, Indianapolis, IN, November 4–7, 2018
- Karst of the Western Delaware County, Ohio Region – Presented at 56th Midwest Ground Water Conference, Lexington, KY, September 19–21, 2011
- Known and Probable Karst in Ohio Revised 2006 – Presented at Digital Mapping Techniques ‘06, Columbus, OH, June 11–14, 2006
- GeoFacts 31: Ohio Karst – Basic introduction to karst in Ohio
- Map of Ohio Karst Areas – Generalized 8.5 x 11-inch map with text
- Delaware County Karst Mapping Project Wraps Up – Web article, August 16, 2011
- Ohio Geology 2009, No. 2 – See p. 6–7 for a brief article about the 2008 Bellevue karst flooding
- Ohio Geology 1999, No. 2 – Featuring articles on karst development, mapping, and impacts on homeowners