Region
United States
79
Idaho
20
Nevada
17
Snake River Plain (Idaho and Or.)
14
Colorado
7
Idaho National Laboratory Region
7
New Mexico
7
Idaho National Laboratory Region (Idaho)
6
Tennessee
6
Hawaii
5
Nevada National Security Site (Nev.)
5
Nye County
5
Jefferson County
4
Missouri
4
Saint Charles County
4
South Carolina
4
Alaska
3
Eddy County
3
Illinois
3
Nevada Test Site
3
Washington (State)
3
Yucca Mountain
3
California
2
Death Valley Region (Calif. and Nev.)
2
Former Soviet republics
2
Germantown (Montgomery County)
2
Idaho Falls
2
Kilauea Volcano
2
Kilauea Volcano (Hawaii)
2
Maryland
2
Southern States
2
Texas
2
Washington (D.C.)
2
Yucca Mountain Region
2
Aiken Region
1
Argonne
1
Bear Creek Watershed
1
Big Lost River Watershed
1
Boise Region
1
Boulder County
1
Brazoria County
1
California, Southern
1
Cascade Range
1
Earth (Planet)
1
East (U.S.)
1
Europe, Eastern
1
Funeral Mountains Wilderness
1
Golden
1
Green River Watershed (Wyo.-Utah)
1
Hagerman Region
1
more ...