Lowest and Highest Points in Crawford County

Lowest and Highest Points in Crawford County
Low Elevation: 
<410 feet above mean sea level
Low Place: 
Wabash River
Low Quad Name: 
Russelville
Low PLSS: 
2-21-5N-10W
Low Geology: 
Cahokia Alluvium
High Elevation: 
>640 feet above mean sea level
High Place: 
unnamed hilltop
High Quad Name: 
Flat Rock
High PLSS: 
2-35-6N-12W
High Geology: 
Illinois Vandalia till upland over Pennsylvanian Mattoon Formation
Area: 
440.97 square miles
Total Relief: 
230 feet
Percent Slope: 
0.91%
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