Low Elevation
< 690 feet above mean sea level
Low Place
East Plum River
Low Quad Name
Loran
Low PLSS
4-34-26N-5E
Low Geology
Cahokia Alluvium, river valley
High Elevation
> 1160 feet above mean sea level
High Place
unnamed hilltop
High Quad Name
Lena
High PLSS
4-13-28N-5E
High Geology
Winslow till member
Area
560.06 square miles
Total Relief
470 feet
Percent Slope
2.29%