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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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| Ponca State Park | State Park | 13.6 | Ponca | Nebraska |
| Bigelow State Park | State Park | 17.8 | Salix | Iowa |
| Buckskin Hills Wildlife Mgmt Area | State Wildlife Management Area | 24.9 | Newcastle | Nebraska |
| Badger Lake Wildlife Mgmt Area | State Wildlife Management Area | 30.2 | Whiting | Iowa |
| Union County State Park | State Park | 30.6 | Beresford | South Dakota |
| Oak Grove State Park | State Park | 35.4 | Hawarden | Iowa |
| Decatur Wildlife Area | State Wildlife Area | 37.4 | Decatur | Iowa |
| Lewis And Clark State Park | State Park | 37.6 | Onawa | Iowa |
| Newton Hills State Park | State Park | 47.2 | Canton | South Dakota |
| Mill Creek State Park | State Park | 50.2 | Paullina | Iowa |