Lowest and Highest Points in Ogle County

Lowest and Highest Points in Ogle County
Low Elevation: 
<650 feet above mean sea level
Low Place: 
Rock River
Low Quad Name: 
Grand Detour
Low PLSS: 
4-8-22N-9E
Low Geology: 
Cahokia Alluvium, river valley
High Elevation: 
>1 020 feet above mean sea level
High Place: 
Southeast branch of Hardpan Ridge
High Quad Name: 
Forreston North
High PLSS: 
4-3-25N-8E
High Geology: 
Thin Illinois Ogle till over Silurian dolomite
Area: 
757.12 square miles
Total Relief: 
370 feet
Percent Slope: 
1.71%