Mark Twain National Wildlife Refuge, IL
Interactive topo map of Mark Twain National Wildlife Refuge, IL
| Place Name: | Mark Twain National Wildlife Refuge |
| Feature Class: | Park |
| US State: | IL |
| County: | Calhoun |
| Latitude: | 39.12 |
| Longitude: | -90.68 |
| Elevation (meters): | 132 m |
| Elevation (feet): | 433′ |
| USGS Quad: | Hamburg topo map |
| 7.5´ topo: |  |
| State topo index: | IL topo index |
| Alternate map versions: | IL topographic maps Editions by year, direct download as GeoPDF. |
| 30´ x 60´ topo: | 1:100,000 scale map |
| 1° x 2° topo: | 1:250,000 scale map |