Low Elevation
< 385 feet above mean sea level
Low Place
Kaskaskia River
Low Quad Name
Venedy
Low PLSS
3-30-1S-5W
Low Geology
Cahokia Alluvium
High Elevation
> 595 feet above mean sea level
High Place
Pelican Point
High Quad Name
Beckemeyer
High PLSS
3-2-1N-3W
High Geology
Hagarstown ridge
Area
497.76 square miles
Total Relief
210 feet
Percent Slope
0.72%