Region
Louisiana
3
Arizona
2
California
2
Great Basin
2
Nevada
2
Pontchartrain, Lake, Watershed
2
Pontchartrain, Lake, Watershed (La.)
2
Washington (State)
2
Africa, West
1
Alabama
1
Antigua and Barbuda
1
Australia
1
Bear Lake Watershed (Utah and Idaho)
1
Black Sea
1
Black Sea Coast
1
Black Sea Lowland
1
Colorado
1
Eastern Shore (Md. and Va.)
1
Finger Lakes Region
1
Front Range (Colo. and Wyo.)
1
Galapagos Islands
1
Georgia
1
Grand Canyon
1
Grand Canyon National Park
1
Iceland
1
Indiana
1
Juab County
1
Kivalliq Region
1
Las Vegas Valley
1
Lava Falls Rapids
1
Lava Falls Rapids (Ariz.)
1
MacLeod, Lake, Region (W.A.)
1
Mackenzie
1
Marias River Valley
1
Marias River Valley (Mont.)
1
Mexico
1
Michigan, Lake, Watershed
1
Montana
1
Nephi (Utah)
1
New England
1
New Mexico
1
New York (State)
1
North America
1
North Carolina
1
North Pacific Ocean
1
Northwest Territories
1
Nunavut
1
Olympic Peninsula
1
Pacific Area
1
Pacific Coast
1
more ...