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Champaign County
Low elevation: <625 feet above mean sea level
Place: Salt Fork River
7.5' quadrangle name: Homer
PLSS: 2-33-19N-14W
Geology: Cahokia Alluvium in river valley
High elevation: >855 feet above mean sea level
Place: unnamed hilltop
7.5' quadrangle name: Rising
PLSS: 3-20-20N-8E
Geology: Champaign Moraine
Area: 987.74 square miles
Total relief (approximate): 230 feet
Average percent slope: 0.50%
State of Illinois | Illinois Department of Natural Resources | University of Illinois