Browsing Presentations by Subject "sinkhole"

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  • Raab, James; Haiker, Bill; Jones, Wayne; Angle, Michael; Pavey, Rick; Swinford, Mac; Powers, Donovan (ODNR-Division of Water, Division of Geological Survey, 2009-01)
    On March 18, 2008 ground water levels rose to 40-year high levels in the Bellevue, Ohio area. Sinkholes, rounded depressions in the landscape formed by solution of bedrock or collapse of an underlying cavity, which typically ...
  • Aden, Douglas J.; Powers, Donovan M.; Pavey, Richard R.; Jones, D. Mark; Martin, Dean R.; Shrake, Douglas L.; Angle, Michael P. (Ohio Department of Natural Resources, Division of Geological Survey, 2011)
    To locate sinks, LiDAR was used to create an ArcGIS layer that identified low, enclosed areas. These low spots were cross referenced with known karst points, bedrock geology, aerial photography (multiple sources/ages), ...

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