Public Sites
| State | County | Name |
|---|---|---|
| Iowa | Polk | Carney |
| Iowa | Polk | Carney Marsh Nature Preserve |
| Iowa | Story | Carr Park |
| Iowa | Carroll | Carroll |
| Iowa | Carroll | Carroll County |
| Illinois | McHenry | Cary |
| Iowa | Dubuque | Cascade |
| Iowa | Jones | Cascade Sportsman Club |
| Iowa | Black Hawk | Casebeer Park, Evansdale |
| Iowa | Des Moines | Casey Barrow Landing |
| Iowa | Woodbury | Casey on Hwy 12 |
| Iowa | Washington | Casey on Hwy 22 |
| Iowa | Linn | Casey on Lindale Drive |
| Iowa | Tama | Casey's Paha State Preserve |
| Iowa | Cass | Cass County |
| Arizona | Pima | Catalina State Park |
| Iowa | Dubuque | Catfish Creek State Preserve |
| Arizona | Cochise | Cave Creek Canyon, South Fork Picnic Area |
| Arizona | Cochise | Cave Creek Ranch, Portal |
| Iowa | Dickinson | Cayler Prairie State Preserve |
| Iowa | Poweshiek | Cecil Rivers Timber Wildlife Area |
| Iowa | Bremer | Cedar Bend County Park |
| Iowa | Cedar | Cedar Bluff |
| Iowa | Cedar | Cedar Bluff Wildlife Area |
| Iowa | Mahaska | Cedar Bluffs Natural Area / State Preserve |