Region
United States
88
Florida
3
Alaska
2
California
2
Massachusetts
2
New Jersey
2
Tennessee
2
Adams County
1
Albuquerque
1
Arkansas
1
Bartlesville
1
Canada
1
Chattanooga
1
Colorado
1
Developing countries
1
East (U.S.)
1
El Paso
1
Escambia County
1
Great Lakes (North America)
1
Green Bay
1
Idaho
1
Lake Charles
1
Lodi
1
Louisiana
1
Mexican-American Border Region
1
Mexico
1
Michigan
1
Missoula
1
Missouri
1
Montana
1
New Mexico
1
New York (State)
1
North America
1
Oak Ridge
1
Oklahoma
1
Passaic River Watershed
1
Prince William Sound
1
Saint Louis
1
Saltville
1
Selma
1
Texas
1
Virginia
1
Washington (State)
1
West (U.S.)
1
West Helena
1
Wisconsin
1