A powerful flash flood tore through Arizona's Grand Canyon on August 29, sending mud, boulders and debris through Bright Angel Canyon. About 15 people may be missing and 62 were evacuated. The flood destroyed footbridges, damaged the park's only water pipeline and reshaped parts of the canyon as more storms threaten the area.

Officials say dozens of people have been evacuated from the depths of the Grand Canyon because of heavy rain and flooding.

More than 60 people had been evacuated from Grand Canyon National Park due to flash flooding, but some people are unaccounted for.