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| Lighthouse |
| Metro and City Park |
| National Forest |
| National Historic Landmark |
| National Historic Site |
| National Historical Park |
| National Memorial |
| National Park |
| National Recreation Area |
| National Seashore |
| National Wildlife Area |
| National Wildlife Refuge |
| State Fish Hatchery |
| State Fishery Area |
| State Forest |
| State Historic Site |
| State Memorial |
| State Natural Area |
| State Nature Preserve |
| State Nursery |
| State Park |
| State Preserve |
| State Recreation Area |
| State Reserve |
| State Wildlife Area |
| State Wildlife Management Area |
| State Wildlife Refuge |
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| Mark Twain National Wildlife Refuge | National Wildlife Refuge | 17.6 | Port Louisa | Iowa |
| Barber Creek Wildlife Mgmt Area | State Wildlife Management Area | 24.7 | Grand Mound | Iowa |
| Syracuse Wildlife Mgmt Area | State Wildlife Management Area | 26 | Wheatland | Iowa |
| Cone Marsh Wildlife Mgmt Area | State Wildlife Management Area | 28 | Conesville | Iowa |
| Big River State Forest | State Forest | 31.5 | Oquawka | Illinois |
| Princeton Wildlife Mgmt Area | State Wildlife Management Area | 32.3 | Princeton | Iowa |
| Delabar State Park | State Park | 34.7 | Oquawka | Illinois |
| Oquawka Wildlife Refuge | State Wildlife Refuge | 40.7 | Gladstone | Illinois |
| Lake Macbride State Park | State Park | 43.2 | Solon | Iowa |
| Palisades Kepler State Park | State Park | 44.9 | Mount Vernon | Iowa |