Public Sites
| State | County | Name |
|---|---|---|
| Iowa | Worth | Worth County Lake Park |
| Iowa | Worth | Worth County |
| Iowa | Jefferson | Woodthrush Woods Preserve |
| Iowa | Adair | Woodside Prairie |
| Iowa | Webster | Woodman Hollow State Preserve |
| Iowa | Warren | Woodland Mounds State Preserve |
| Iowa | Dallas | Woodland Hills |
| Iowa | Woodbury | Woodbury County |
| Iowa | Clarke | Woodburn |
| Iowa | Osceola | Wolter's Prairie/Ely-Bauermeister Wildlife Management |
| Iowa | Butler | Wolter's Prairie Preserve |
| Iowa | Grundy | Wolfe Family Preserve |
| Colorado | Mineral | Wolf Creek Pass |
| Iowa | Tama | Wolf Creek @ E Ave |
| Pennsylvania | Philadelphia | Wissahickon Valley Park |
| Iowa | Decatur | Wirth-Springer Woods |
| Iowa | Madison | Winterset Reservoir |
| Iowa | Winneshiek | Winneshiek County |
| Iowa | Winnebago | Winnebago River on Hwy 69 |
| Iowa | Winnebago | Winnebago County |
| Iowa | Monona | Winnebago Bend Wildlife Area |
| Iowa | Polk | Windsor Heights |
| Colorado | Weld | Windsor |
| Iowa | Scott | Window World |
| Iowa | Taylor | Windmill Lake County Park |