Low Elevation
< 320 feet above mean sea level
Low Place
Ohio River
Low Quad Name
Saline Mines
Low PLSS
3-7-11S-10E
Low Geology
Cahokia Alluvium
High Elevation
> 840 feet above mean sea level
High Place
Buzzards Point and nearby hilltop
High Quad Name
Karbers Ridge
High Geology
Pennsylvanian Caseyville Sandstone ridge
Area
324.70 square miles
Total Relief
520 feet
Percent Slope
1.36%