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McDonough County


mcdonough county map Map legend and scale


Low elevation: <500 feet above mean sea level
      Place: Camp Grindstone Creek
      7.5' quadrangle name: Fandon
      PLSS: 4-36-15S-4W
      Geology: Cahokia Alluvium in river valley

High elevation: >800 feet above mean sea level
      Place: Unnamed hilltop
      7.5' quadrangle name: Raritan
      PLSS: 4-7-7N-3W
      Geology: Thin Illinois Kellerville till over Pennsylvanian Carbondale Formation

Area: 583.92 square miles
      Total relief (approximate): 300 feet
      Average percent slope: 1.13%


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

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Updated 5/7/2007 JKH