Low Elevation
< 340 feet above mean sea level
Low Place
Cypress Creek and Mississppi River
Low Quad Name
Cypress and McClure
Low PLSS
3-36-13S-1E and 3-31-13S-3W
Low Geology
Cahokia Alluvium, river valley
High Elevation
> 1020 feet above mean sea level
High Place
Bald Knob
High Quad Name
Cobden
High PLSS
3-11-26N-3W
High Geology
Lower Devonian hill, the state's biggest, having over 620 feet of relief in a distance of about 1 mile
Area
417.84 square miles
Total Relief
680 feet
Percent Slope
3.15%