|
|||
Menard County Low elevation: <460 feet above mean sea level Place: Sangamon River 7.5' quadrangle name: Oakford PLSS: 3-10-19N-8W Geology: Cahokia Alluvium and till in river valley High elevation: >645 feet above mean sea level Place: 4 unnamed small upland hills 7.5' quadrangle name: Tallula PLSS: 3-22-17N-8W Geology: Illinois Vandalia till member upland Area: 311.94 square miles Total relief (approximate): 185 feet Average percent slope: 0.98%
|
|||
|
Home
| Search
| Site Map
| Contact Us State of Illinois | Illinois Department of Natural Resources | University of Illinois |
|||
| Updated 5/7/2007 JKH | |||