Low Elevation
< 450 feet above mean sea level
Low Place
Little Wabash River
Low Quad Name
Hord
Low PLSS
3-31-6N-6E
Low Geology
Cahokia Alluvium
High Elevation
> 680 feet above mean sea level
High Place
unnamed hilltop
High Quad Name
Altamont West
High PLSS
3-8-7N-4E
High Geology
Hagarstown ridge
Area
474.92 square miles
Total Relief
230 feet
Percent Slope
0.75%