Lowest and Highest Points in Wabash County
Low elevation: <360 feet above mean sea level
Place: Wabash River
7.5' quadrangle name: Grayville
PLSS: 2-16-3S-14W
Geology: Cahokia Alluvium in river valley
High elevation: >590 feet above mean sea level
Place: Unnamed hilltop
7.5' quadrangle name: Lancaster
PLSS: 2-15-1N-13W
Geology: Thin Illinois Vandalia till over Pennsylavanian Mattoon Formation
Area: 225.04 square miles
Total relief (approximate): 230 feet
Average percent slope: 0.96%
Updated 10/2/2009 JKH