Low Elevation
< 505 feet above mean sea level
Low Place
Kaskaskia River
Low Quad Name
Beecher City
Low PLSS
3-15-9N-3E
Low Geology
Cahokia Alluvium, river valley
High Elevation
> 829 feet above mean sea level
High Place
Williamsville Hill
High Quad Name
Lakewood
High PLSS
3-23-10N-2E
High Geology
Hagarstown ridge
Area
759.95 square miles
Total Relief
324 feet
Percent Slope
0.88%