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Logan County


Logan countyMap legend and scale


Low elevation: <510 feet above mean sea level
      Places: Salt Creek and Sugar Creek
      7.5' quadrangle names: New Holland and Middleton
      PLSS: 3-30-20N-4W
      Geology: Cahokia Alluvium in river valley

High elevation: 771 feet above mean sea level
      Place: Elkhart Hill
      7.5' quadrangle name: Broadwell
      PLSS: 3-18-18N-3W
      Geology: Le Roy Moraine

Area: 612.32 square miles
      Total relief (approximate): 261 feet
      Average percent slope: 0.67%


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

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Updated 5/4/2007 JKH