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Franklin County


franklin county map Map legend and scale


Low elevation: <350 feet above mean sea level
      Place: Big Muddy River
      7.5' quadrangle name: Herrin
       PLSS: 3-33-7S-1E
      Geology: Cahokia Alluvium and Equality Formation Carmi Member; lake bottom deposits

High elevation:   >604 feet above mean sea level
      Place: Unnamed hilltop
      7.5' quadrangle name: Akin
      PLSS: 3-1-7S-4E
      Geology: Illinois Vandalia till upland over Pennsylvanian Bond Formation ridge

Area: 427.09 square miles
      Total relief (approximate): 254 feet
      Average percent slope: .85%


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ILLINOIS STATE GEOLOGICAL SURVEY
INSTITUTE OF NATURAL RESOURCE SUSTAINABILITY     |    UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN

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Updated 5/4/2007 JKH