Dozens of hikers became ill during trips to waterfalls near the Grand Canyon (2024)

Dozens of hikers became ill during trips to waterfalls near the Grand Canyon (1)

A photo shows Mooney Falls on the Havasupai reservation in Arizona in May. Dozens of tourists say they fell ill on a recent visit to a popular and picturesque stretch of waterfalls deep in a gorge neighboring Grand Canyon National Park. Randy Shannon/via AP hide caption

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Randy Shannon/via AP

Dozens of hikers say they fell ill during trips to a popular Arizona tourist destination that features towering blue-green waterfalls deep in a gorge neighboring Grand Canyon National Park.

Madelyn Melchiors, a 32-year-old veterinarian from Kingman, Ariz., said she was vomiting severely Monday evening and had a fever that endured for days after camping on the Havasupai reservation.

She eventually hiked out to her car in a weakened state through stiflingly hot weather and was thankful a mule transported her pack several miles up a winding trail, she said.

“I said, ‘If someone can just pack out my 30-pound pack, I think I can just limp along,’” said Melchiors, an experienced and regular backpacker. Afterward, “I slept 16 hours and drank a bunch of electrolytes. I’m still not normal, but I will be OK. I’m grateful for that.”

The federal Indian Health Service said Thursday that a clinic it oversees on the reservation is providing timely medical attention to people who became ill. Environmental health officers with the regional IHS office were sent to Havasupai to investigate the source of the outbreak and to implement measures to keep it from spreading, the agency said.

“Our priority is the health and well-being of the Havasupai residents and visitors, and we are working closely with local health authorities and other partners to manage this situation effectively,” the agency said in a statement.

While camping, Melchiors said she drank from a spring that is tested and listed as potable, as well as other sources using a gravity-fed filter that screens out bacteria and protozoa — but not viruses.

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“I did a pretty good job using hand sanitizer” after going to the bathroom, she said. “It’s not like you can use soap or water easily.”

Coconino County health officials said Tuesday they received a report from a group of people who hiked to the waterfalls of “gastrointestinal illness” but didn't know how many people have been affected. The tribe's land is outside the county's jurisdiction.

Still, county health spokesperson Trish Lees said hikers should take extra precautions to prevent the spread of illness, including filtering water.

“Watch for early symptoms of norovirus, such as stomach pain and nausea, before the trip. Norovirus spreads easily on camping trips, especially when clean water supplies can be limited and hand washing facilities may be non-existent. Isolate people who are sick from other campers,” the county said.

Thousands of tourists travel to the Havasupai reservation each year to camp near a series of picturesque waterfalls. The reservation is remote and accessible only by foot, helicopter, or by riding a horse or mule.

The hike takes tourists 8 miles down a winding trail through desert landscape before they reach the first waterfall. Then comes the village of Supai, where about 500 tribal members live year-round. Another 2 miles down the trail are campsites with waterfalls on both ends.

Tourism is a primary source of revenue for the Havasupai Tribe. The campground that has a creek running through it has limited infrastructure. The hundreds of daily overnight campers can use composting toilets on site and are asked to pack out refuse. Recent accounts from hikers on social media indicate trails are littered with garbage, including bathroom tissue, plastic bottles and fuel canisters.

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The Havasupai Tribe Tourism Office says it tested the water last week from a local spring that visitors rely on for drinking and found it was safe for human consumption.

FOX-10 TV in Phoenix first reported on the illnesses Wednesday, saying some groups opted to take a helicopter out of the canyon because they were too sick to hike out.

Dozens of other people have posted on social media in recent days describing their travails with gastrointestinal problems.

“I definitely have a literally bitter taste in my mouth right now," Melchiors said. "I think I would approach things a little bit differently.”

Dozens of hikers became ill during trips to waterfalls near the Grand Canyon (2024)

FAQs

Were dozens of hikers ill during trips to the Grand Canyon waterfalls? ›

Dozens of hikers became ill during trips to waterfalls near the Grand Canyon. Dozens of hikers say they fell ill during trips to a popular Arizona tourist destination that features towering blue-green waterfalls deep in a gorge neighboring Grand Canyon National Park.

Did people fall sick in the Grand Canyon? ›

Dozens of hikers visiting Havasupai Falls at the bottom of the Grand Canyon have reported falling violently ill with a mysterious sickness. In some cases, visitors were too sick to hike back out of the canyon, and needed to be carried out via helicopter.

What illness did dozens report after visiting Havasu Falls? ›

Health officials confirmed that Norovirus was present at Havasupai Falls when dozens of hikers and sightseers all became sick at the same time. COCONINO COUNTY, Ariz.

Why are hundreds of Grand Canyon tourists getting sick? ›

“Watch for early symptoms of norovirus, such as stomach pain and nausea, before the trip. Norovirus spreads easily on camping trips, especially when clean water supplies can be limited and hand washing facilities may be non-existent. Isolate people who are sick from other campers,” the county said.

How many people accidentally fall at the Grand Canyon? ›

Over 250 people are rescued from the canyon each year, according to the National Park Service, and nearly 200 visitors have died at the park from 2007 to March 2024, 39 of them while hiking.

What mysterious illness happened at Grand Canyon? ›

An outbreak of a severe gastrointestinal illness swept through the hundreds of hikers who visited Arizona's famed Havasu Falls this week. In some cases, individual hikers and whole groups had to be airlifted out because they were too sick to walk unassisted. The cause of the outbreak is as of yet unknown.

How many people have went missing at the Grand Canyon? ›

According to the reporting, there have been at least six people found dead and 56 missing persons at Grand Canyon National Park from 2018 through February 2023. Visitors filed about 1,100 missing persons reports in that time as well.

Can you drink the water in the Grand Canyon? ›

Water may be obtained directly from the Colorado River and Bright Angel Creek, but must be treated before drinking. Most other water sources in the canyon are intermittent and unreliable. Q: How do I treat my water? A: There are 3 common methods for treating water: boiling (stove), iodine tablets, and filters.

What is the water illness in the Grand Canyon? ›

During April 1–June 17, 2022, the largest outbreak of acute gastroenteritis documented in the Grand Canyon National Park backcountry occurred. At least 222 rafters and backpackers became infected, probably with norovirus.

What is the leading cause of death at the Grand Canyon? ›

Nearly 5 million people visit the mile-deep, yawning chasm every year to experience hiking, boating, camping and more. Of those, the 10-year average number of fatalities at the canyon is 17, according to data from the park. The most common cause of death is cardiac arrest.

How have humans affected the Grand Canyon? ›

Humans have introduced non-native plant and animal species into the park, which out compete native flora and fauna for space, food and water. Air pollution has routinely drifted into the canyon from metropolitan areas and nearby coal-fired power plants, affecting visibility from scenic vistas.

What are the health issues with the Grand Canyon? ›

Sun/Elements/Extreme Weather Exposure -- The Grand Canyon's intense sun, particularly in summer, can cause severe dehydration. Be sure to drink plenty of water, protect yourself from the sun, and avoid hiking into the canyon during the sweltering summer heat.

What happened to Havasu Falls? ›

Havasupai Falls, a world-famous tourist destination in the heart of the remote Havasupai Indian Reservation in the Grand Canyon, is closed indefinitely after a devastating flash flood on Thursday, Aug. 22. Chenoa Nickerson of Gilbert was swept away in the flash flood.

Can you still visit Havasu Falls? ›

The official season to visit Havasupai runs from February to November each permit season. If you visit in February or November expect thinner crowds, cooler days and nights, and a chiller creek.

What is the mystery illness in Grand Canyon? ›

Dozens of people got sick this month at Havasupai Falls in Grand Canyon National Park. Tourists experienced vomiting, diarrhea, and fever symptoms. Officials said people in the northern Arizona region are experiencing "a gastrointestinal illness."

Is Grand Canyon hiking safe? ›

The chance of falling into the Grand Canyon is about one in 400,000. Falls, heat stroke, dehydration: Each year, hikers die on their Grand Canyon trip because they underestimate the dangers of the wilderness.

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