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Morgan County


morgan county map Map legend and scale


Low elevation: <430 feet above mean sea level
      Place: Illinois River
      7.5' quadrangle name: Meredosia
      PLSS: 3-32-16N-13W
      Geology: Cahokia Alluvium in river valley

High elevation: >705 feet above mean sea level
      Places: 2 unnamed hilltops
      7.5' quadrangle names: Alexander and Jacksonville
      PLSS: 3-23-14N-9W and 3-30-14N-9W
      Geology: Vandalia till uplands over Pennsylvanian Modesto Formation

Area: 566.72 square miles
      Total relief (approximate): 275 feet
      Average percent slope: 0.92%


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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