Low Elevation
< 500 feet above mean sea level
Low Place
Camp Grindestone Creek
Low Quad Name
Fandon
Low PLSS
4-36-15S-4W
Low Geology
Cahokia Alluvium
High Elevation
> 800 feet above mean sea level
High Place
unnamed hilltop
High Quad Name
Raritan
High PLSS
4-7-7N-3W
High Geology
Thin Illinois Kellerville till over Pennsylvanian Carbondale Formation
Area
583.92 square miles
Total Relief
300 feet
Percent Slope
1.13%