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White County Low elevation: <340 feet above mean sea level Place: Wabash River 7.5' quadrangle name: Emma PLSS: 3-27-7S-10E Geology: Cahokia Alluvium in river valley High elevation: >580 feet above mean sea level Place: Boyd Hill 7.5' quadrangle name: Centerville PLSS: 3-2-4S-9E Geology: Thin Illinois Vandalia till over Pennsylvanian Mattoon Formation ridge Area: 496.49 square miles Total relief (approximate): 240 feet Average percent slope: 0.91%
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| Updated 5/7/2007 JKH | |||