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Cass County


cass county map Map legend and scale


Low elevation: <420 feet above mean sea level
      Place: Illinois River
      7.5' quadrangle name: Cooperstown
      PLSS: 3-33-17N-13W
      Geology: Cahokia Alluvium in river valley

High elevation: >680 feet above mean sea level
      Place: Unnamed hilltop
      7.5' quadrangle name: Clear Lake
      PLSS: 3-14-18N-11W
      Geology: Loess over Glasford Till upland

Area: 379.55 square miles
      Total relief (approximate): 260 feet
      Average percent slope: 0.96%


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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