Place
- Togo2
- Tunisia2
- Uganda2
- United States Virgin Islands2
- Utah2
- Vineyard Sound (Mass.)2
- Washington (State)2
- Western Sahara2
- Zimbabwe2
- Alpine County (Calif.)1
- Amador County (Calif.)1
- American Samoa1
- Atlantic Ocean1
- Botswana1
- Butte County (Calif.)1
- Calaveras County (Calif.)1
- Chesapeake Bay (Md. and Va.)1
- Contra Costa County (Calif.)1
- Del Norte County (Calif.)1
- El Dorado County (Calif.)1