Existing comment:
Boundary Changes:
Arches National Monument was established by Herbert Hoover's Presidential Proclamation on April 12, 1929, and originally consisted of two separate units totaling 4,520 acres. Since it was established, Arches had undergone numerous boundary adjustments. Franklin D. Roosevelt enlarged the monument to well over 34,000 acres, and Dwight D. Eisenhower later reduced it by 240 acres. Lyndon B. Johnson more than doubled park acreage in 1968, and Congress made it a National Park in 1971. In 1998, more than 3,000 acres near Lost Spring Canyon were added by Congress, resulting in a park of approximately 76,000 acres. |