Low Elevation
< 510 feet above mean sea level
Low Place
Sugar and Brouilletts Creeks
Low Quad Name
Dennison and St. Bernice
Low PLSS
2-16-12N-10W and 2-14-14N-10W
Low Geology
Cahokia Alluvium, river valley
High Elevation
> 835 feet above mean sea level
High Place
unnamed hilltop
High Quad Name
Grandview
High PLSS
2-4-12N-13E
High Geology
Westfield Moraine
Area
616.99 square miles
Total Relief
325 feet
Percent Slope
0.79%