The area of Salt Plains National Wildlife Refuge is 129.499 square kilometers.
The area of Salinas River National Wildlife Refuge is 1,485,196.3070208 square meters.
Salinas River National Wildlife Refuge was created in 1974.
Wallkill River National Wildlife Refuge was created in 1990.
Swan River National Wildlife Refuge was created in 1973.
White River National Wildlife Refuge was created in 1935.
Alligator River National Wildlife Refuge was created in 1984.
Parker River National Wildlife Refuge was created in 1942.
Fox River National Wildlife Refuge was created in 1979.
Tualatin River National Wildlife Refuge was created in 1992.
Crystal River National Wildlife Refuge was created in 1983.
Maple River National Wildlife Refuge was created in 1939.
Sacramento River National Wildlife Refuge was created in 1989.
Red River National Wildlife Refuge was created in 2001.