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Kane County
Low elevation: <620 feet above mean sea level
Place: Fox River
7.5' quadrangle name: Aurora South
PLSS: 3-32-28N-8E
Geology: Cahokia Alluvium in river valley
High elevation: ~1065 feet above mean sea level
Place: unnamed hilltop
7.5' quadrangle name: Pingree Grove
PLSS: 3-19-41N-7E
Geology: Marengo Moraine
Area: 519.67 square miles
Total relief (approximate): 445 feet
Average percent slope: 1.06%
State of Illinois | Illinois Department of Natural Resources | University of Illinois