Low Elevation
< 500 feet above mean sea level
Low Place
Sangamon River
Low Quad Name
Salisbury
Low PLSS
3-22-17N-6W
Low Geology
Cahokia Alluvium, river valley
High Elevation
> 710 feet above mean sea level
High Place
unnamed hilltop
High Quad Name
Waverly
High PLSS
3-20-13-N-7W
High Geology
Illinoian Kellerville till upland
Area
867.37 square miles
Total Relief
210 feet
Percent Slope
0.62%