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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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| Barber Creek Wildlife Mgmt Area | State Wildlife Management Area | 10.4 | Grand Mound | Iowa |
| Maquoketa Caves State Park | State Park | 19.2 | Maquoketa | Iowa |
| Princeton Wildlife Mgmt Area | State Wildlife Management Area | 25.1 | Princeton | Iowa |
| Dalton Pond State Fishing Access Area | State Park | 25.9 | Preston | Iowa |
| Wildcat Den State Park | State Park | 26 | Muscatine | Iowa |
| Indian Bluffs Wildlife Mgmt Area | State Wildlife Management Area | 29.7 | Cascade | Iowa |
| Wapsipinicon State Park | State Park | 30.6 | Anamosa | Iowa |
| Bellevue State Park | State Park | 34 | Bellevue | Iowa |
| Palisades Kepler State Park | State Park | 36.7 | Mount Vernon | Iowa |
| Ayers Sand Prairie State Nature Preserve | State Nature Preserve | 38.5 | Savanna | Illinois |