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Input and output shapefiles used in the hydraulic modeling for the Clear Fork Mohican River and Cedar Fork in Richland County, Ohio


Publication Date
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Ostheimer, C.J., 2019, Geospatial datasets and hydraulic models for the Clear Fork Mohican River and Cedar Fork in Richland County, Ohio: U.S. Geological Survey data release,


Digital flood-inundation maps for an 18.6-mile (mi) reach of the Clear Fork Mohican River that extends approximately from 100 feet upstream from Gass Road near Lexington, Ohio to 700 feet downstream from Benedict Road in Butler , Ohio, were created by the U.S. Geological Survey (USGS) in cooperation with the Muskingum Watershed Conservancy District as part of a Federal Emergency Management Agency (FEMA) Flood Insurance Study (FIS). The flood-inundation maps show estimates of the areal extent corresponding to the 1% and 0.2% annual-exceedance probability floods. Flood profiles were computed for the stream reach by means of the one-dimensional step-backwater model HEC–RAS. The model was calibrated by using the current stage-discharge [...]


Attached Files

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“Shapefiles overview image”
thumbnail 3.17 MB image/png
“Shapefiles of flood extent”
16.95 MB application/zip


The initial target audience is the state and local agencies that must make emergency operational decisions during flooding events. However, since the graphics are easy to view, anyone with an interest during these events can make use of the maps, including the Federal Emergency Management Agency (FEMA), the U.S. Geological Survey (USGS), Corps of Engineers (COE), state and local emergency managers, the media, and the general public.
Shapefiles overview image
Shapefiles overview image



  • Ohio-Kentucky-Indiana Water Science Center



Data source
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