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Tazewell County


tazewell county map 


Low elevation: <440 feet above mean sea level
      Place: Illinois River
      7.5' quadrangle name: Duck Island
      PLSS: 3-17-23N-7W
      Geology: Cahokia Alluvium in river valley

High elevation: >830 feet above mean sea level
      Place: Unnamed hilltop
      7.5' quadrangle name: Washington
      PLSS: 3-11-26N-3W
      Geology: Washington Moraine

Area: 650.28 square miles
      Total relief (approximate): 390 feet
      Average percent slope: 1.22%


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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