Lowest and Highest Points in Morgan County

Lowest and Highest Points in Morgan County
Low Elevation: 
<430 feet above mean sea level
Low Place: 
Illinois River
Low Quad Name: 
Meredosia
Low PLSS: 
3-32-16N-13W
Low Geology: 
Cahokia Alluvium, river valley
High Elevation: 
>705 feet above mean sea level
High Place: 
2 unnamed hilltops
High Quad Name: 
Alexander and Jacksonville
High PLSS: 
3-23-14N-9W and 3-30-14N-9W
High Geology: 
Vandalia till uplands over Pennsylvanian Modesto Formation
Area: 
566.72 square miles
Total Relief: 
275 feet
Percent Slope: 
0.92%
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