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McLean County



mclean county map Map legend and scale


Low elevation: <600 feet above mean sea level
      Place: Sugar Creek
      7.5' quadrangle name: Armington
      PLSS: 3-31-22N-1W
      Geology: Cahokia Alluvium and till in river valley

High elevation: >950 feet above mean sea level
      Place: Unnamed hilltop
      7.5' quadrangle name: Saybrook
      PLSS: 2-6-23N-6E
      Geology: Fletcher / Eureka / Normal Moraine complex

Area: 1,174.05 square miles
      Total relief (approximate): 350 feet
      Average percent slope: 0.75%


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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