Region
Afghanistan
65
Mars (Planet)
19
Alaska
13
Colorado
11
California
7
Montana
7
Hawaii
6
Washington (State)
6
Mauna Loa (Hawaii Island)
5
Mauna Loa (Hawaii Island, Hawaii)
5
New Mexico
5
Yakima River Watershed
5
Yakima River Watershed (Wash.)
5
Missouri
4
Texas
4
Idaho
3
Kittitas County
3
Kittitas County (Wash.)
3
Oregon
3
Shannon County
3
Texas County
3
United States
3
Utah
3
Venus (Planet)
3
Appalachian Basin
2
Arizona
2
Bayfield County
2
Bayfield County (Wis.)
2
Dent County
2
Denver Basin
2
Douglas County
2
Douglas County (Wis.)
2
Edwards Aquifer
2
El Paso County
2
Grafton County
2
Hays County
2
Illinois Basin
2
Michigan Basin (Mich. and Ont.)
2
Nevada
2
New Hampshire
2
Oklahoma
2
Park County
2
Trinity Aquifer
2
Vermont
2
West (U.S.)
2
Wisconsin
2
Wyoming
2
Yosemite National Park
2
Yosemite National Park (Calif.)
2
Albuquerque (N.M.)
1
more ...