Spatial Coverage
- Cass County1
- Cass County (Minn.)1
- Cedar River (King County, Wash.)1
- Central City1
- Central City (Colo.)1
- Central City.1
- Chandernagore (India)1
- Chelan County1
- Chelan County (Wash.)1
- Cherokee County (Ala.)1
- Cherokee County (Kan.)1
- Chihuahua (Mexico : State)1
- Cincinnati (Ohio)1
- Cincinnati.1
- Columbia County (N.Y.)1
- Columbia River1
- Commencement Bay (Wash.)1
- Connecticut River1
- Connecticut River.1
- Connecticut.1
