Low Elevation
< 315 feet above mean sea level
Low Place
Ohio River
Low Quad Name
Little Cypress
Low PLSS
3-6-17S-7E
Low Geology
Cahokia Alluvium
High Elevation
> 1064 feet above mean sea level
High Place
Williams Hill
High Quad Name
Herod
High PLSS
3-7-11S-7E
High Geology
Pennsylvanian Tradewater formation ridge
Area
370.46 square miles
Total Relief
749 feet
Percent Slope
3.76%