Low Elevation
< 300 feet above mean sea level
Low Place
Ohio River
Low Quad Name
Shelterville
Low PLSS
3-35-12S-7E
Low Geology
Cahokia Alluvium, river valley
High Elevation
> 830 feet above mean sea level
High Place
unnamed hilltop
High Quad Name
Herod
High PLSS
3-1-11S-7E
High Geology
Pennsylvanian Caseyville Sandstone ridge
Area
179.48 square miles
Total Relief
530 feet
Percent Slope
3.61%