Low Elevation
< 350 feet above mean sea level
Low Place
Big Muddy River
Low Quad Name
De Soto
Low PLSS
3-19-8S-1E
Low Geology
Cahokia Alluvium / Equality Formation, Carmi Member in river valley
High Elevation
> 680 feet above mean sea level
High Place
unnamed hilltop
High Quad Name
Lick Creek
High PLSS
3-35-10S-1E
High Geology
Pennsylvanian Abbot Formation
Area
439.51 square miles
Total Relief
330 feet
Percent Slope
1.19%