Lowest and Highest Points in La Salle County

Lowest and Highest Points in La Salle County
Low Elevation: 
<445 feet above mean sea level
Low Place: 
Illinois River
Low Quad Name: 
Spring Valley
Low PLSS: 
3-19-33N-1E
Low Geology: 
Cahokia Alluvium, river valley
High Elevation: 
>910 feet above mean sea level
High Place: 
unnamed hilltop
High Quad Name: 
Sublette
High PLSS: 
3-5-36N-1E
High Geology: 
La Moille / Paw Paw Moraines
Area: 
1 137.41 square miles
Total Relief: 
465 feet
Percent Slope: 
1.03%