Region
Utah
7
New Jersey
4
Earth (Planet)
3
Tennessee
3
Arizona
2
California
2
Cedar Valley (Iron County)
2
Colorado
2
Idaho
2
Massachusetts
2
New York (State)
2
Newark Basin
2
Puerto Rico
2
Rancocas Creek Watershed
2
San Juan County
2
South Dakota
2
United States
2
Virginia
2
Alabama
1
Alaska
1
Anchorage Region
1
Atlantic Coast (U.S.)
1
Beaver River Watershed (Utah)
1
Brazil
1
Bristol (Vt.)
1
Bristol Region
1
Bucks County
1
Castle Pines Region
1
Cedar Rapids
1
Cedar River (Minn. and Iowa)
1
Cedar Valley (Utah County)
1
Charles River
1
Charles River (Mass.)
1
Chesapeake Bay (Md. and Va.)
1
Colonel's Island
1
Colonel's Island (Ga.)
1
Columbia Plateau
1
Conecuh River Region
1
Cove Creek (Millard County and Sevier County, Utah)
1
Cumberland Mountains
1
Dolores River (Colo. and Utah)
1
Fort Huachuca
1
Genesee County
1
Georgia
1
Grand County
1
Idaho National Laboratory Region
1
Illinois
1
Iowa
1
Iron County
1
James River (N.D. and S.D.)
1
more ...