Lowest and Highest Points in Clinton County
Low elevation: <385 feet above mean sea level
Place: Kaskaskia River
7.5' quadrangle name: Venedy
PLSS: 3-30-1S-5W
Geology: Cahokia Alluvium
High elevation: >595 feet above mean sea level
Place: Pelican Point
7.5' quadrangle name: Beckemeyer
PLSS: 3-2-1N-3W
Geology: Hagarstown ridge
Area: 497.76 square miles
Total relief (approximate): 210 feet
Average percent slope: 0.72%
Updated 9/29/2009 JKH