The area of Sacramento River National Wildlife Refuge is 41.059 square kilometers.
Sacramento River National Wildlife Refuge was created in 1989.
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.
Red River National Wildlife Refuge was created in 2001.
Coldwater River National Wildlife Refuge was created in 2000.