Region
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North Pacific Region
4
Northern Mariana Islands
4
Northwest Territories
4
Oklahoma
4
Pacific Islands (Trust Territory)
4
Rhode Island
4
San Joaquin River
4
San Juan River Watershed (Colo.-Utah)
4
Senegal
4
Superior, Lake
4
Wyoming
4
Alabama
3
Alaska, Southeast
3
Alaska, Southwest
3
American Samoa
3
Appalachian Region, Southern
3
Arctic Ocean
3
Arctic regions
3
Atlantic Coast (Canada)
3
Atlantic Coast (New England)
3
Atlantic Coast (South Atlantic States)
3
Atlantic Provinces
3
Beaufort Sea
3
Bermuda Islands
3
Central Valley (Valley)
3
Chesapeake Bay (Md. and Va.)
3
Colombia
3
Cuba
3
Delta Region
3
Elwha River
3
European Union countries
3
Fiji
3
Flower Garden Banks National Marine Sanctuary
3
Great Lakes Region (North America)
3
Hudson River (N.Y. and N.J.)
3
Kerala
3
Klamath River
3
Lac du Flambeau Reservation (Wis.)
3
Latin America
3
Madagascar
3
Maine, Gulf of
3
McNary Lock and Dam (Or.)
3
Michigan
3
Missouri River
3
National Petroleum Reserve
3
New Brunswick
3
New Territories
3
New York
3
New York (N.Y.)
3
Ohio River
3
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