Region
United States
9
Atlantic Coast (U.S.)
8
Pacific Coast (U.S.)
8
Alaska
2
Middle Atlantic States
2
Northeastern States
2
Southern States
2
Wyoming
2
Afghanistan
1
Appalachian Region, Southern
1
Arizona
1
Auke Bay (Alaska : Bay)
1
Auke Bay (Bay)
1
California
1
Chicago
1
Colorado
1
Colorado River Watershed (Colo.-Mexico)
1
Columbia River
1
Florida
1
Grand Valley (Colo. and Utah)
1
Gulf Coast (U.S.)
1
Illinois
1
Mexico, Gulf of
1
Mid-Atlantic Bight
1
Northwest, Pacific
1
Pacific Coast
1
Pacific Coast (North America)
1
Rocky Mountains
1
Shoshone National Forest
1
Shoshone National Forest (Wyo.)
1
South Atlantic Bight
1
Southwest, New
1
West (U.S.)
1