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Livingston County
Low elevation: <590 feet above mean sea level
Place: Vermilion River
7.5' quadrangle name: Streator South
PLSS: 3-2-30N-3E
Geology: Cahokia Alluvium in river valley
High elevation: >835 feet above mean sea level
Place: Unnamed hilltop
7.5' quadrangle name: Chatsworth South
PLSS: 3-12-25N-7E
Geology: Gifford Moraine
Area: 1,035.63 square miles
Total relief (approximate): 245 feet
Average percent slope: 0.52%
State of Illinois | Illinois Department of Natural Resources | University of Illinois