Grand Canyon Flood: Hikers Recount Deadly Flash Flood

Like clockwork, clouds build up in the afternoon, the wind starts to swirl, and the skies darken over the Grand Canyon. But on Saturday, August 29, the monsoon kicked into high gear with a ferocity that caught dozens of hikers off guard, triggering a catastrophic flash flood that killed two people, left a third missing, and severely damaged the park’s only water pipeline.

More than 80 people were airlifted to safety from the depths of the canyon as torrents of muddy water surged through Bright Angel Creek, washing out footbridges, destroying infrastructure, and reshaping the landscape in one of America’s most iconic national parks, according to AP News.

A Storm That Came Out of Nowhere

The storm descended with startling speed. Drew Harrell, an emergency medicine physician with University of New Mexico Hospital who serves as medical director for Grand Canyon National Park, was on a training mission with his team when conditions shifted dramatically.

“It went from relatively clear skies to blowing winds in the time frame of about a minute,” Harrell told the Associated Press, estimating gusts at 40 mph. “It was for sure some of the worst acute fast-forming weather I have ever seen in my time, whether it’s in the mountains or marine environments or in the desert Southwest.”

Parth Desai, another physician hiking with the group, described the scene as chaos unfolded around them. “We saw basically the flood, waterfalls coming up out of nowhere, boulders, mud, landslides happening everywhere,” he said. “And then we were concerned about a lightning strike.”

The group scrambled through cactus to reach higher ground as debris rushed toward them, eventually making their way to Phantom Ranch where they were rescued by helicopter.

At the Cottonwood Campground upstream, Mike Sumaruk of Tulsa, Oklahoma, was relaxing after a nearly 7-mile hike when the wind began howling. “I jumped into my tent because I thought it was going to blow away and was trying to hold it down,” he said. Then he heard a roar that wouldn’t stop. “I thought it was like thunder in the distance, but it wasn’t going away. And I said, that’s not thunder, and I unzipped the tent and got out and saw the huge wall of water. We just left everything.”

Tom Monroe, 59, of Flagstaff, was hiking down from the North Rim when the sky “started just opening up, holy hell raining on us.” He huddled under an overhang as rocks “the size of footballs or beach balls” tumbled down the cliffs. “None of us can really stop thinking about it,” he said.

Two Dead, One Missing

The flood claimed the lives of Dr. John Giusti, 46, a chiropractor from Granbury, Texas, and Brent Rosenkranz, 42, a martial arts instructor and school owner also from Granbury. Their bodies were recovered on Sunday and Monday respectively, according to ABC News.

A third friend, Timothy Allen Smith, 53, a pilot for NetJets from Star Valley, Wyoming, remains missing as search efforts continue. The three lifelong friends had entered the canyon together on Friday for a planned camping, hiking, and fishing trip.

“To the community, he was a gifted healer. To his friends, a powerhouse of life. To his daughters, he was their ultimate hero. To me, he was my whole world,” Giusti’s wife, Janet, said in a statement.

Search crews from the Border Patrol Search, Trauma, and Rescue Unit (BORSTAR) have been searching on foot near Phantom Ranch, while river patrols look downstream along the Colorado River, AZFamily reported.

“We are absolutely holding out hope that that person is still alive,” said Incident Commander Dave Black.

Rescue Effort Under Extreme Conditions

Rescuers worked through the night using night vision equipment to locate stranded hikers. By sunset Saturday, 45 people had been rescued, and 37 more were evacuated on Sunday, according to AP News. The Arizona Department of Public Safety used infrared equipment to locate two hikers.

Rangers used the park’s permit system and checked vehicle license plates to track missing individuals. The Red Cross was on hand at the South Rim, with counselors available for survivors.

Harrell credited park rangers with preventing an even greater tragedy. “They mitigated the opportunity for there to have been more serious loss of life or injuries,” he said.

Critical Water Pipeline Severely Damaged

The flood dealt a devastating blow to the Transcanyon Waterline, the 12.5-mile pipeline that supplies water to all South Rim facilities serving roughly 6 million annual visitors and 1,600 year-round residents. Officials estimate approximately 40% of the pipeline was damaged or destroyed, according to AP News.

“We anticipate miles of the pipeline being destroyed,” said Grand Canyon Deputy Superintendent Brian Drapeaux.

The pipeline, completed in the 1970s, had already broken more than 85 times since 2010. A $208 million rehabilitation project began in 2023 and was expected to be completed in 2027, but the flood has thrown that timeline into question. The National Park Service describes the waterline as providing potable water and fire suppression for all South Rim facilities, including over 800 historic buildings.

Ironically, when the original pipeline was nearing completion in the 1960s, a historic flood destroyed 40% of the project - a strikingly similar fate to what has now occurred.

Stage 4 water restrictions were implemented on the South Rim beginning August 31. Tourists have been barred from staying overnight at lodges and hotels within the park, and year-round residents have been asked to conserve water with short showers and selective toilet flushing. South Rim campgrounds remain open but without spigots, and campfires have been banned due to limited water for firefighting.

“Heaven help us if the whole thing down there at the bottom has to be reconstructed,” said Jack Schmidt, director of the Center for Colorado River Studies at Utah State University. “Where are they going to get the money?”

A Perfect Storm of Conditions

The flood resulted from a convergence of factors. Approximately 0.25 to 0.75 inches of rain fell in less than 30 minutes over terrain already saturated by two earlier storm systems. The creek drops roughly 6,000 feet from the North Rim to the Colorado River, and the steep, rocky canyon walls funneled water with devastating speed.

National Weather Service meteorologist Darren McCollum noted that the early-morning flood risk map did not flag the Grand Canyon for danger, though warnings escalated rapidly throughout the day. “When it builds so quickly, and then moves so quickly, you worry about how much people really had a chance to get a heads up,” he told The Arizona Republic.

Rain also fell on part of the Dragon Bravo Fire scar, a burn area left by a lightning-caused wildfire in July 2025 that consumed the historic Grand Canyon Lodge on the North Rim. Without vegetation, barren burn scars allow runoff to flow more quickly, and the National Park Service had warned in February of the elevated potential for flash flooding in the Bright Angel Creek watershed.

Economic Impact on a Community Still Recovering

The flooding threatens an economy still recovering from last year’s devastating fire, according to AP News. The Grand Canyon was the fourth-most visited national park in 2025, drawing nearly $1 billion in annual spending by close to 5 million tourists. That spending supported almost 9,000 jobs.

Tusayan, the gateway community just outside the park, remains open with full services, but the indefinite closure of South Rim lodging is expected to hit hard. “We’re just heartbroken about what has happened at Phantom Ranch,” said Tusayan Mayor Clarinda Vail. “We are open. Full services in Tusayan.”

A Historic Refuge Under Threat

Phantom Ranch, the sole lodge at the bottom of the Grand Canyon, has a fabled history dating back more than a century. President Theodore Roosevelt set up a camp on the site during a 1913 hunting trip, and the ranch opened in 1922. King Gustaf VI Adolf of Sweden was an early guest in 1926, and Senator Robert F. Kennedy stayed there in 1967 after rafting down the Colorado River, as The Guardian noted.

The extent of damage to the historic structures remains unclear as the park continues its assessment. The Bright Angel Campground, North Kaibab Trail, and Phantom Ranch remain closed, and popular trails were still closed as of September 3.

Looking Ahead

As search efforts continue for Timothy Smith, park officials are grappling with the monumental task of rebuilding critical infrastructure in one of the most rugged environments on Earth. The flood has highlighted the vulnerability of the park’s aging systems and the increasing intensity of monsoon storms in the Southwest, which climate scientists say are becoming stronger as the planet warms.

For hikers like Mike Sumaruk, who lost everything in the flood but survived, the pull of the canyon remains strong. “I’m definitely going to give it another shot,” he said.

But first, the Grand Canyon faces a long and uncertain road to recovery - one that will require rebuilding trails, replacing footbridges, and restoring a water system that is the lifeline for millions of visitors and the communities that serve them.