Arizona, USA, August 31, 2026 — About 15 people are feared missing or unaccounted for after a major flash flood swept through parts of Grand Canyon National Park in Arizona, forcing the evacuation of dozens of hikers and campers and causing extensive damage to trails and infrastructure.
The National Park Service said the flooding struck the Bright Angel Canyon and Phantom Ranch areas on Saturday afternoon, August 29. The sudden surge sent large boulders, metal structures and other debris into Bright Angel Creek and the Colorado River.
At least 62 people were evacuated from the affected areas as authorities worked to account for people who may have been in the canyon when the flooding occurred. The number of missing people was initially estimated at more than 20 but was later revised to about 15 as officials received additional information.
The National Park Service has asked anyone with information about hikers or backpackers who were in the Bright Angel Creek corridor on August 29 to contact investigators. Authorities are also seeking information about people who may have been on the North Kaibab Trail, staying at Bright Angel Campground or traveling near Phantom Ranch.
Helicopters operated by the National Park Service and the Arizona Department of Public Safety have been involved in evacuation and search operations. Officials said the difficult terrain and limited communication coverage inside the canyon have complicated efforts to locate people who may still be unaccounted for.
