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Fayette County
Low elevation: <450 feet above mean sea level
Place: Carlyle Lake
7.5' quadrangle name: Boulder
PLSS: 3-31-4N-1W
Geology: Lake in river valley
High elevation: >710 feet above mean sea level
Place: Unnamed hilltop
7.5' quadrangle name: Ramsey Lake
PLSS: 3-5-8N-1W
Geology: Hagarstown ridge
Area: 717.64 square miles
Total relief (approximate): 260 feet
Average percent slope: .87%
State of Illinois | Illinois Department of Natural Resources | University of Illinois