MAPPING KARST IN THE NORTH-CENTRAL OHIO REGION
In total there are 1,208 distinct locations under review for karst in this 428-km2 area. To date, the Ohio Geological Survey has confirmed 52 sinkholes and 24 springs, and eliminated 142 suspect sites either remotely or in the field. In addition to the newly located features, 240 karst points that were field verified by previous workers will be rechecked against the LiDAR and in the field. The remaining suspect locations will be field checked to determine if they are karst or not. Also, records on size and depth of 218 features from a 1980 project are being compared to the LiDAR to see if change over time can be observed.
Karst regions are highly susceptible to pollution, and structures built near them may subside. Karst features in the Bellevue region have also served as conduits of groundwater discharge during periods of unusually high precipitation. This groundwater discharge has led to severe, localized flooding. The maps produced from this effort will allow areas of land development near karst features to be better planned and maintained.