Region
Africa
3
Alabama
2
Alaska
16
Arctic National Wildlife Refuge
2
Arctic National Wildlife Refuge (Alaska)
2
Arizona
9
Asia
2
Bear Lodge Mountains
1
Bighorn Basin (Mont. and Wyo.)
1
Black Hills (S.D. and Wyo.)
1
Black Kettle National Grassland (Okla. and Tex.)
1
Boulder County
1
Brooks Range
1
Buffalo Gap National Grassland
1
Buffalo Gap National Grassland (S.D.)
1
Cabo Rojo
1
Cabo Rojo National Wildlife Refuge
1
Cache la Poudre River Watershed
1
California
9
Canada
1
Cape Hatteras National Seashore
1
Cape Hatteras National Seashore (N.C.)
1
Cascades (Or. and Wash.)
1
Central Idaho Wilderness
3
China
1
Colorado
358
Columbia River Watershed
2
Coquille River (Or.)
1
Crystal River Valley
1
Currituck National Wildlife Refuge
6
Dakota Tallgrass Prairie Wildlife Management Area (N.D. and S.D.)
1
Developing countries
2
Disappointment Creek Valley
1
East (U.S.)
1
Eliza Island
1
Elwha River
1
Elwha River (Wash.)
1
Europe
1
Florida
2
Fort Niobrara National Wildlife Refuge (Neb.)
1
Frank Church-River of No Return Wilderness
1
Garnet Mountain
1
George Washington Birthplace National Monument
1
Grand Canyon National Park
2
Great Lakes Region (North America)
1
Great Plains
2
Guam
1
Gunnison River Valley
1
Gunnison River Watershed
1
Hawaii
1
more ...