Public Sites
| State | County | Name |
|---|---|---|
| Iowa | Dickinson | Judd Wildlife Area |
| Iowa | Clayton | Joy Springs County Park - Trout |
| Iowa | Polk | Jordan Park |
| Iowa | Johnson | Jordan Creek Road NE |
| Iowa | Jones | Jones County |
| Iowa | Jackson | Joinerville Park |
| Iowa | Worth | Joice |
| Iowa | Polk | Johnston |
| Iowa | Johnson | Johnson County |
| Iowa | Chickasaw | Johnny Walnut Seed Conservation Area |
| Kentucky | Daviess | Joe Ford Nature Park |
| Florida | Manatee | Joan M Durante Community Park |
| Texas | Nueces | Joan and Scott Paradise Pond |
| Iowa | Chickasaw | Joachim Prairie |
| South Dakota | Fall River | JH Kieth Cascade Falls Picnic Area |
| South Dakota | Fall River | JH Keith Cascade Springs Picnic Area |
| Iowa | Hamilton | Jewell Railroad Prairie |
| Iowa | Winneshiek | Jewell Prairie |
| Iowa | Polk | Jester Park |
| Iowa | Madison | Jensen Marsh |
| Iowa | Shelby | Jens Jensen Prairie Landscape Park |
| Iowa | Story | Jennett Heritage Area |
| Iowa | Dickinson | Jemmerson Slough Wildlife Area |
| Georgia | Glynn | Jekyll Island |
| Iowa | Jefferson | Jefferson County Park |