Lowest and Highest Points in McLean County

Lowest and Highest Points in McLean County
Low Elevation: 
<600 feet above mean sea level
Low Place: 
Sugar Creek
Low Quad Name: 
Armington
Low PLSS: 
3-31-22N-1W
Low Geology: 
Cahokia Alluvium and till in river valley
High Elevation: 
>950 feet above mean sea level
High Place: 
unnamed hilltop
High Quad Name: 
Saybrook
High PLSS: 
2-6-23N-6E
High Geology: 
Fletcher / Eureka / Normal Moraine complex
Area: 
1 174.05 square miles
Total Relief: 
350 feet
Percent Slope: 
0.75%