- Park Designations:
Arches National Monument—established April 12, 1929
Arches National Park—established November 12, 1971
- Acreage: 76,519 acres or 119 square miles
- Visitation: 1,539,028 (2017) View more visitation statistics.
- Highest Elevation: Elephant Butte 5,653 feet
- Lowest Elevation: Visitor Center 4,085 feet
- Average annual precipitation: 8-10 inches Read more about weather.
- Number of documented arches: Over 2,000 (Some may have fallen and new arches may be forming.)
- Longest arch: Landscape Arch has a light opening 306 feet (93.3 meters) across.
- Tallest arch: Double Arch South has a vertical light opening of 112 feet (34.1 meters).
- Rock colors: Red sandstones in the park contain iron oxide. Greenish rocks also contain iron, but in a reduced (non-oxidized) state. Depending on the conditions under which a rock was formed, iron can color rocks red, black, orange, purple, or greenish grey.
- 483 species of plants
Rare species: Canyonlands Biscuitroot
- 186 species of birds
Threatened species: Bald Eagle, Mexican Spotted Owl
- 52 species of mammals
- 6 species of fish
Endangered species: Bonytail Chub, Colorado Pikeminnow, Humpback Chub, Razorback Sucker
- 6 species of amphibians
- 21 species of reptiles
Last updated: December 19, 2018