Investigation: 170 US hospitals face major flood risk. Experts say Trump is making it worse.

Aurora, a former Peninsula Hospital patient, looks upon the Tennessee psychiatric hospital where she was committed as a teenager. KFF Health News agreed not to publish her full name because she shared private medical history. (Brett Kelman/KFF Health News)

LOUISVILLE, Tenn. — When a big storm hits, Peninsula Hospital could be underwater.

At this decades-old psychiatric hospital on the edge of the Tennessee River, an intense storm could submerge the building in 11 feet of water, cutting off all roads around the facility, according to a sophisticated computer simulation of flood risk.

Aurora, a young woman who was committed to Peninsula as a teenager, said the hospital sits so close to the river that it felt like a moat keeping her and dozens of other patients inside. KFF Health News agreed not to publish her full name because she shared private medical history.

“My first feeling is doom,” Aurora said as she watched the simulation of the river rising around the hospital. “These are probably some of the most vulnerable people.”

Covenant Health, which runs Peninsula Hospital, said in a statement it has a “proactive and thorough approach to emergency planning” but declined to provide details or answer questions.

Peninsula is one of about 170 American hospitals, totaling nearly 30,000 patient beds from coast to coast, that face the greatest risk of significant or dangerous flooding, according to a months-long KFF Health News investigation based on data provided by Fathom, a company considered a leader in flood simulation. At many of these hospitals, flooding from heavy storms has the potential to jeopardize patient care, block access to emergency rooms, and force evacuations. Sometimes there is no other hospital nearby.

Much of this risk to hospitals is not captured by flood maps issued by the Federal Emergency Management Agency, which have served as the nation’s de facto tool for flood estimation for half a century, despite being incomplete and sometimes decades out of date. As FEMA’s maps have become divorced from the reality of a changing climate, private companies like Fathom have filled the gap with simulations of future floods. But many of their predictions are behind a paywall, leaving the public mostly reliant on free, significantly limited government maps.

“This is highly concerning,” said Caleb Dresser, who studies climate change and is both an emergency room doctor and a Harvard University assistant professor. “If you don’t have the information to know you’re at risk, then how can you triage that problem?”

The deadliest hospital flooding in modern American history occurred 20 years ago during Hurricane Katrina, when the bodies of 45 people were recovered from New Orleans’ Memorial Medical Center, including some patients whom investigators suspected were euthanized. More flooding deaths were narrowly avoided one year ago when helicopters rescued dozens of people as Hurricane Helene engulfed Unicoi County Hospital in Erwin, Tennessee.

Rebecca Harrison, a paramedic, called her children from the Unicoi roof to say goodbye.

“I was scared to death, thinking, ‘This is it,’” Harrison told CBS News, which interviewed Unicoi survivors as part of KFF Health News’ investigation. “Alarms were going off. People were screaming. It was chaos.”

The investigation — among the first to analyze nationwide hospital flood risk in an era of warming climate and worsening storms — comes as the administration of President Donald Trump has slashed federal agencies that forecast and respond to extreme weather and also dismantled FEMA programs designed to protect hospitals and other important buildings from floods.

When asked to comment, FEMA said flooding is a common, costly, and “under appreciated” disaster but made no statement specific to hospitals. Spokesperson Daniel Llargués defended the administration’s changes to FEMA by reissuing an August statement that dismissed criticism as coming from “bureaucrats who presided over decades of inefficiency.”

Alice Hill, an Obama administration climate risk expert, said the Trump administration’s dismissal of climate change and worsening floods would waste billions of dollars and endanger lives.

In 2015, Hill led the creation of the Federal Flood Risk Management Standard, which required that hospitals and other essential structures be elevated or incorporate extra flood protections to qualify for federal funding. 

FEMA stopped enforcing the standard in March.

“People will die as a result of some of the choices being made today,” Hill said. “We will be less prepared than we are now. And we already were, in my estimation, poorly prepared.”

‘Flood risk is everywhere’

The KFF Health News investigation identified more than 170 hospitals with flood risk by comparing the locations of more than 7,000 facilities to peer-reviewed flood hazard mapping provided by Fathom, a United Kingdom company that simulates flooding in spaces as small as 10 meters using laser-precision elevation measurements from the U.S. Geological Survey.

Hospitals were determined to have a significant risk if Fathom’s 100-year flood data predicted that a foot or more of water could reach a considerable portion of their buildings, excluding parking garages, or cut off road access to the hospital. A 100-year flood is an intense weather event that has roughly a 1% chance of occurring in any given year but can happen more often. 

The investigation found heightened flood risks at large trauma centers, small rural hospitals, children’s hospitals, and long-term care facilities that serve older and disabled patients. At least 21 are critical access hospitals, with the next-closest hospital 25 miles away, on average.

Flooding threatens dozens of hospitals in coastal areas, including in Florida, Louisiana, Texas, and New York. Farther inland, flooding of rivers or creeks could envelop other hospitals, particularly in Appalachia and the Midwest. Even in the sun-soaked cities and arid expanses of the American West, storms have the potential to surround some hospitals with several feet of pooling water, according to Fathom’s data.

These findings are likely an undercount of hospitals at risk because the investigation overlooked pockets of potential flooding at some hospitals. It excluded facilities like stand-alone ERs, outpatient clinics, and nursing homes.

“The reality is that flood risk is everywhere. It is the most pervasive of perils,” said Oliver Wing, the chief scientific officer at Fathom, who reviewed the findings. “Just because you haven’t experienced an extreme doesn’t mean you never will.”

Dresser, the ER doctor, said even a small amount of flooding can shut down an unprepared hospital, often by interrupting its power supply, which is needed for life-sustaining equipment like ventilators and heart monitors. He said the most vulnerable hospitals would likely be in rural areas.

“A lot of rural hospitals are now closing their pediatric units, closing their psychiatry units,” Dresser said. “In a financially stressed situation, it can be hard to prioritize long-term threats, even if they are, for some institutions, potentially existential.”

Urban hospitals can face dangerous flooding, too. Fathom’s data predicts 5 to 15 feet of water around neighboring hospitals — Kadlec Regional Medical Center and Lourdes Behavioral Health — that straddle a tiny creek in Richland, Washington.

By Fathom’s estimate, a 100-year flood could cause the nearby Columbia River to spill over a levee that protects Richland, then loosely follow the creek to the hospitals. Some of the deepest flooding is estimated around Lourdes, which was built on land the U.S. Army Corps of Engineers set aside in 1961 as a “ponding and drainage easement.”

At the time, this land was supposed to be capable of storing enough water to fill at least 40 Olympic-size swimming pools, according to military documents obtained through the Freedom of Information Act. A mental health facility has occupied this spot since the 1970s.

Both Kadlec and Lourdes said in statements that they have disaster plans but did not answer questions about flooding. Tina Baumgardner, a Lourdes spokesperson, said government flood maps show the hospital is not in a 100-year flood plain.

This is not uncommon. Of the more than 170 hospitals with significant flood risk identified by KFF Health News, one-third are located in areas that FEMA has not designated as flood hazard zones.

Sometimes the difference is stark. For example, at Ochsner Choctaw General in Alabama — the only hospital for 30 miles in any direction — FEMA maps suggest a 100-year flood would overflow a nearby creek but spare the hospital. Fathom’s data predicts the same event would flood most of the hospital with 1 to 2 feet of water, including the ER and the helicopter pad.

Ochsner Health did not answer questions about flooding preparations at Choctaw General.

FEMA flood maps were launched in the ’60s as part of the National Flood Insurance Program to determine where insurance is required and building codes should include flood-proofing. According to a FEMA statement, the maps show only a “snapshot in time” and are not intended to predict where flooding will or won’t happen.

FEMA spokesperson Geoff Harbaugh said the agency intends to modernize its maps through the Future of Flood Risk Data initiative, which will enable the agency to “better project flood risk” and give Americans “the information they need to protect their lives and property.”

The program was launched by the first Trump administration in 2019 but has since received sparse public updates. Harbaugh declined to provide a detailed update or timeline for the program.

Chad Berginnis, executive director of the Association of State Floodplain Managers, said it is unknown whether FEMA is still trying to upgrade its maps under Trump, as the agency has cut off communications with outside flooding experts.

“There has been not a single bit of loosening of what I’m calling the FEMA cone of silence,” Berginnis said. “I’ve never seen anything like it.”

Floods are expected to worsen as a warming climate fuels stronger storms, drenching areas that are already flood-prone and bringing a new level of flooding to areas once considered lower risk.

The National Oceanic and Atmospheric Administration has said that 2024 was the warmest year on record — more than 2 degrees Fahrenheit higher than the 20th-century average. Scientists across the globe have estimated that each degree of global warming correlates to a 4% increase in the intensity of extreme rainfall.

“Warmer air can hold more moisture, so this leads us to experience heavier downpours,” said Kelly Van Baalen, a sea level rise expert at the nonprofit Climate Central. “A 100-year flood today could be a 10-year flood tomorrow.”

Intensifying storms raise concerns about Peninsula Hospital, which has operated for decades mere feet from the Tennessee River but has no known history of flooding.

Peninsula spokesperson Josh Cox said the river is overseen by the Tennessee Valley Authority, which uses dams to manage water levels and generate electricity. Estimates provided by the TVA suggest the dams could keep Peninsula dry even in a 500-year flood.

Fathom, however, said its flood simulation accounts for the dams and stressed that a large enough storm could drop more rain than even the TVA could control. These predictions are echoed by another flood modeling firm, First Street, which also says an intense storm could cause more than 10 feet of flooding in the area around Peninsula.

“It’s a hospital right on the banks of a major American river,” said Wing, the Fathom scientist. “It just isn’t conceivable that such a location is risk-free.”

Jack Goodwin, 75, a retired TVA employee who has lived next to Peninsula for three decades, said he was confident the dams could protect the area. But after reviewing Fathom’s predictions, Goodwin began to research flood insurance.

“Water can rise quickly and suddenly, and the destruction is tremendous,” he said. “Just because we’ve never seen it here doesn’t mean we won’t see it.”
Hospital_flood_methodology_Hacker.docx
CBS News contributed to this report.

KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF — the independent source for health policy research, polling, and journalism.