The area of Salt Plains National Wildlife Refuge is 129.499 square kilometers.
Salinas River National Wildlife Refuge was created in 1974.
Coldwater River National Wildlife Refuge was created in 2000.
Assabet River National Wildlife Refuge was created in 2005.
Fox River National Wildlife Refuge was created in 1979.
Roanoke River National Wildlife Refuge was created in 1989.
Cache River National Wildlife Refuge was created in 1986.
Great River National Wildlife Refuge was created in 1958.
Little River National Wildlife Refuge was created in 1987.
Swan River National Wildlife Refuge was created in 1973.
White River National Wildlife Refuge was created in 1935.
Wallkill River National Wildlife Refuge was created in 1990.
Alligator River National Wildlife Refuge was created in 1984.