Lowest and Highest Points in Grundy County

Lowest and Highest Points in Grundy County
Low Elevation: 
<510 feet above mean sea level
Low Place: 
Illinois River
Low Quad Name: 
Seneca
Low PLSS: 
3-30-33N-6E
Low Geology: 
Cahokia Alluvium
High Elevation: 
>700 feet above mean sea level
High Place: 
unnamed hilltop
High Quad Name: 
Stavanger
High PLSS: 
3-6-34N-6E
High Geology: 
Ransom Moraine
Area: 
426.49 square miles
Total Relief: 
190 feet
Percent Slope: 
0.54%