Spatial Coverage
- Burlington (Wash.)1
- Butte County (Calif.)1
- Caldwell County (Tex.)1
- Calumet Region (Mich.)1
- Calumet Region.1
- Camano Island (Wash.)1
- Canada, Western1
- Carroll County (Md.)1
- Catskill Forest Preserve (N.Y.)1
- Chaffee County (Colo.)1
- Champlain, Lake1
- Charley River (Alaska)1
- Cheshire1
- Cheshire (Conn.)1
- Cheyenne (Wyo.)1
- China1
- Clarion County1
- Colorado.1
- Colusa County (Calif.)1
- Coral Sea1
