Grand Canyon flood in Arizona kills 1, leaves 15 missing

The Grand Canyon flood in the US state of Arizona has pushed large boulders and metal structures into the Colorado River that runs through it, leaving one dead and at least 15 missing. No injuries have been reported so far.

The National Park Service says the park's sole water pipeline that serves tourists and residents was knocked out, prompting significant water conservation measures to be implemented.

A major flash flood triggered by intense downpour unfolded Saturday afternoon in Bright Angel Creek when roaring torrents crippled campsites, destroyed footbridges spanning over the creek and created a new river rapid in one of America's most heavily visited natural wonders.

The National Park Service confirms the single fatality without providing additional information.

A 46-year-old man's body was recovered Sunday evening near Crystal Rapids along the Colorado River.

More than 60 stranded people have been airlifted out of the canyon floor, while search-and-rescue teams continue to scour the inner gorges for multiple hikers who remain unaccounted for.

Tourist Erica Viola says she and around 50 other hikers were standing on Silver Bridge as floodwater rose underneath and debris floated by, including what looked like a bunkhouse. They were safely evacuated by a helicopter.

The Bright Angel Campground, the North Kaibab Trail and Phantom Ranch remain closed out as a safety precaution.

Beyond the human toll, the flood has reportedly dislodged boulders which crushed the sole pipeline that supplies fresh water to the park's South Rim.

Tourists won't be able to stay overnight at lodges and hotels within the park, starting Monday.

Authorities are also asking year-round residents to conserve water.