Deadly Grand Canyon Floods: Unraveling the Causes Behind the Tragedy

POLICY WIRE — Arizona, USA — At least two individuals have perished and 15 others remain unaccounted for following catastrophic flash flooding in Arizona’s Grand Canyon National Park. The deluge, which dropped nearly an inch of rain per hour over the weekend, has left a trail of destruction.

The torrential rains, lasting for three hours on Saturday afternoon, inundated popular hiking trails and submerged the historic Phantom Ranch Lodge cabins in the Bright Angel Canyon area under five feet of water. The storm overwhelmed already saturated areas, resulting in debris flows that caught many park visitors off guard.

Helicopter rescues were launched to save more than 60 people stranded by the floods. The search for the missing continues, with the body of a 46-year-old man recovered near Crystal Rapids along the Colorado River on Sunday night. Another body has also been found, though neither has been identified.

Hiker David Gregory recounted his harrowing experience, stating, I don’t think we would have made it out alive if we had fallen into the creek and then we’d gotten carried into the Colorado River. There was, like, a whirlpool in there. Physician Parth Desai described the sudden onset of the flood as he was navigating a narrow passage.

The Bright Angel Canyon area remains closed due to ongoing risks of flash flooding, debris flows, rockfalls, and changing trail and river conditions. The National Weather Service has issued a flood watch for northern and central Arizona through Monday evening.

The flooding has also severely damaged the canyon’s only water pipeline, leading to water restrictions for local communities. Hotel accommodations in the area have been closed starting Monday night.

The National Park Service has reported that the waterline is currently non-operational, necessitating significant water conservation measures to maintain available supplies. Grand Canyon National Park remains open for daytime visitors.

The floods are part of a larger pattern influenced by a super El Niño climate phenomenon, which has brought wetter weather to the American Southwest. Combined with a marine heat wave exacerbated by human-caused climate change, these factors have increased atmospheric moisture levels by 5 to 15 percent above average, according to meteorologist Ben Knoll.

This summer is expected to be one of the warmest on record, with July being the hottest July ever and August already breaking heat records. The flooding follows America’s worst-ever spring drought, making the ground less able to absorb heavy rainfall.

The National Park Service has urged anyone with information about missing persons to contact the NPS Investigative Services Branch Tip Line at 888-653-0009.

Reporting by Policy-Wire (PW)