Digital flood-inundation maps for the Saline and Wabash Rivers referenced to elevations on the Ohio River in southern Illinois were created by the U.S. Geological Survey (USGS). The inundation maps, accessible through the USGS Flood Inundation Mapping
Murphy, Elizabeth A.,Sharpe, Jennifer B. jbsharpe@usgs.gov,Soong, David T.. Ohio River backwater flood-inundation maps for the Saline and Wabash Rivers in southern Illinois. 2012-01-01.