Hart Mountain National Antelope Refuge was created in 1936.
The area of Hart Mountain National Antelope Refuge is 1,095.112 square kilometers.
Mountain Longleaf National Wildlife Refuge was created in 2003.
Hopper Mountain National Wildlife Refuge was created in 1974.
Rocky Mountain Arsenal National Wildlife Refuge was created in 1992.
Emiquon National Wildlife Refuge was created in 2000.
The area of Mountain Longleaf National Wildlife Refuge is 36.486 square kilometers.
The area of Hopper Mountain National Wildlife Refuge is 9,999,782.2197504 square meters.
Matlacha Pass National Wildlife Refuge was created on 1908-09-26.
Mark Twain National Wildlife Refuge Complex was created in 1958.
Desecheo National Wildlife Refuge was created in 1976.
Hillside National Wildlife Refuge was created in 1975.
Chincoteague National Wildlife Refuge was created in 1943.