Region
Texas
North America
3
California
2
Eastland County
2
Edwards Aquifer (Tex.)
2
Hudspeth County
2
Kansas
2
New Mexico
2
New York (State)
2
Stephens County
2
United States
2
Alabama
1
Ascutney Mountain (Vt.)
1
Elliott County
1
Jeff Davis County
1
Karnes County
1
Kentucky
1
Louisiana
1
Maine
1
Marathon Region
1
Minnesota
1
Mono Lake
1
Nevada
1
North Dakota
1
Oregon
1
Purgatory Canon
1
San Antonio Region
1
Tascota Mesa Quadrangle
1
Utah
1
Vermont
1
Washington (State)
1