Mark Twain National Wildlife Refuge Complex was created in 1958.
The area of Sayville National Wildlife Refuge is 513,950.76564480003 square meters.
Emiquon National Wildlife Refuge was created in 2000.
Matlacha Pass National Wildlife Refuge was created on 1908-09-26.
Desecheo National Wildlife Refuge was created in 1976.
Hillside National Wildlife Refuge was created in 1975.
Chincoteague National Wildlife Refuge was created in 1943.
Wheeler National Wildlife Refuge was created in 1938.
Copalis National Wildlife Refuge was created in 1907.
Brazoria National Wildlife Refuge was created in 1969.
Agassiz National Wildlife Refuge was created in 1937.
Washita National Wildlife Refuge was created in 1961.
Huleia National Wildlife Refuge was created in 1973.