Klamath Basin National Wildlife Refuge Complex was created in 1908.
Upper Klamath National Wildlife Refuge was created in 1928.
Klamath Marsh National Wildlife Refuge was created in 1958.
Lower Klamath National Wildlife Refuge was created in 1908.
San Diego National Wildlife Refuge Complex was created in 1972.
Caribbean Islands National Wildlife Refuge Complex was created in 1974.
Mark Twain National Wildlife Refuge Complex was created in 1958.
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.