Low Elevation
< 440 feet above mean sea level
Low Place
Embarras River
Low Quad Name
Landes
Low PLSS
2-15-5N-14W
Low Geology
Cahokia Alluvium, river valley
High Elevation
> 620 feet above mean sea level
High Place
unnamed hilltop
High Quad Name
Wheeler
High PLSS
3-32-8N-*E
High Geology
Hagarstown ridge
Area
492.09 square miles
Total Relief
180 feet
Percent Slope
0.65%