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Putnam County


putnam county map Map legend and scale


Low elevation: ~440 feet above mean sea level
      Place: Illinois River
      7.5' quadrangle name: Henry
      PLSS: 3-33-31N-2W
      Geology: Cahokia Alluvium in river valley

High elevation: >740 feet above mean sea level
      Place: Unnamed hilltop
      7.5' quadrangle name: McNabb
      PLSS: 3-17-32N-1W
      Geology: Mount Palatine Moraine

Area: 170.51 square miles
      Total relief (approximate): 300 feet
      Average percent slope: 1.77%


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Updated 5/7/2007 JKH