Park Establishment and DesignationsIn 1933, Texas established Texas Canyons State Park using 15 school sections owned by the state. Lands forfeited for non payment of taxes were quickly added and the name was changed to Big Bend State Park, and by October 1933 included about 160,000 acres. On June 20, 1935, President Franklin D. Roosevelt signed a bill that authorized the establishment of Big Bend National Park. On June 6, 1944 a deed for about 700,000 acres was formally presented to President Roosevelt. On June 12, 1944, Big Bend was established as a national park by Congressional Act signed by President Franklin D. Roosevelt. It was designated an International Biosphere Reserve in 1976.
- Globally Important Bird Area - September 2001
- UNESCO Biosphere Reserve - October 26, 1976
- National Park (established) - June 12, 1944
- National Park (authorized) - June 20, 1935