|
|||
Rock Island County Low elevation: <540 feet above mean sea level Place: Mississippi River 7.5' quadrangle name: Blanchard Island PLSS: 4-34-16N-6W Geology: Cahokia Alluvium in river valley High elevation:>810 feet above mean sea level Place: Unnamed hilltop 7.5' quadrangle name: Reynolds PLSS: 4-31-16N-2W Geology: Illinoian Kellerville till upland Area: 447.32 square miles Total relief (approximate): 270 feet Average percent slope: 1.50
|
|||
|
Home
| Search
| Site Map
| Contact Us State of Illinois | Illinois Department of Natural Resources | University of Illinois |
|||
| Updated 5/7/2007 JKH | |||