Lowest and Highest Points in McHenry County

Lowest and Highest Points in McHenry County
Low Elevation: 
<730 feet above mean sea level
Low Place: 
Fox River
Low Quad Name: 
Crystal Lake
Low PLSS: 
3-34-43N-8E
Low Geology: 
Cahokia Alluvium, river valley
High Elevation: 
>1 189 feet above mean sea level
High Place: 
unnamed hilltop
High Quad Name: 
Harvard
High PLSS: 
3-17-46N-6E
High Geology: 
Woodstock / Marengo Moraine
Area: 
606.12 square miles
Total Relief: 
459 feet
Percent Slope: 
1.24%