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Washington County


washington county map 


Low elevation: <385 feet above mean sea level
      Place: Kaskaskia River
      7.5' quadrangle name: Venedy
      PLSS: 3-30-1S-5W
      Geology: Cahokia Alluvium in river valley

High elevation: ~583 feet above mean sea level
      Place: Unnamed hilltop
      7.5' quadrangle name: Oakdale
      PLSS: 3-16-3S-4W
      Geology: Hagarstown ridge

Area: 557.82 square miles
     Total relief (approximate): 198 feet
     Average percent slope: 0.71%


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Updated 5/7/2007 JKH