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Randolph County


randolph county map Map legend and scale


Low elevation: <360 feet above mean sea level
      Place: Mississippi River
      7.5' quadrangle name: Rockwood
      PLSS: 3-8-8S-5W
      Geology: Cahokia Alluvium in river valley

High elevation: >740 feet above mean sea level
      Place: Unnamed hilltop
      7.5' quadrangle name: Rockwood
      PLSS: 3-29-8S-5W
      Geology: Thin Vandalia till over Pennsylvanian Caseyville Sandstone

Area: 588.68 square miles
      Total relief (approximate): 380 feet
      Average percent slope: 1.67%


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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