10 Deadliest US floods in the last 25 years that still haunt in the nation's history
Texas flash floods have claimed at least 82 lives, with numerous other holiday visitors and campers still missing after torrential rains triggered a rapid and devastating rise in water levels.
Kerr County emerged as the worst-hit region as nearly 12 inches of rain fell early Friday morning during an overnight storm, causing the Guadalupe River to surge 26 feet in just 45 minutes. The disaster unfolded over the holiday weekend, catching many off guard and overwhelming campsites, roads, and riverside communities.
This tragedy underscores a stark reality: flash floods are the deadliest weather hazard in the United States, surpassing hurricanes and tornadoes in annual fatalities.
The National Weather Service reports an average of over 125 flood-related deaths each year. As communities continue to reel from this latest disaster, it becomes yet another entry in a long history of devastating US floods from Hurricane Katrina to Superstorm Sandy that reveal the escalating threat of extreme weather events.
Here are the 10 most disastrous flood events in the US in the last 25 years that will shake you.
by Taboola
by Taboola
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10
major flood disasters in the US
from Katrina to Kentucky
Event
Year
Location(s)
Fatalities
Hurricane Helene
2024
FL, GA, NC, SC, TN, VA
~250
Eastern Kentucky Floods
2022
Eastern Kentucky
45
Waverly, TN Flash Flood
2021
Waverly, Tennessee
20
Hurricane Harvey
2017
Houston and Southeast Texas
68
West Virginia Floods
2016
West Virginia
23
Superstorm Sandy
2012
US East Coast (esp. NY & NJ)
147 (72 in US)
Mississippi River Basin Floods
2011
OK, MO, AR, LA, TN
24
Hurricane Ike
2008
Texas Gulf Coast
100+
Hurricane Katrina
2005
Gulf Coast, especially New Orleans
~1,400
Tropical Storm Allison
2001
Texas and Louisiana (especially Houston)
41
Major flood disasters in the US
The Texas Hill Country flood now adds to the growing list of flood disasters that have devastated parts of the US Here's a closer look at some of the most severe flood events in the US:
Hurricane Helene (2024)
Source: Bloomberg
O
ne of the most recent deadly events, Hurricane Helene tore through Florida, Georgia, the Carolinas, Tennessee, and Virginia in September 2024. The storm caused around 250 fatalities, most of which were due to inland flooding, not wind.
North Carolina alone reported 108 deaths, and entire Appalachian communities were left cut off from electricity, communications, and vital supplies. It was the deadliest hurricane since Katrina in 2005.
Eastern Kentucky Floods (2022)
Source: Reuters
In July 2022, relentless rainfall triggered catastrophic flooding in eastern Kentucky, killing 45 people, according to the Associated Press.
Meteorologists noted that the floods destroyed entire neighborhoods, schools, water systems, and roadways.
Thousands of residents lost their homes and belongings overnight, marking one of the worst natural disasters in Kentucky's history.
Waverly, Tennessee Flash Flood (2021)
Source: Washington Post
A staggering 17 inches of rain fell within 24 hours in Waverly, Tennessee, in August 2021. The resulting flood claimed 20 lives, including young twin babies swept from their father's arms. The rapid rise in water levels overwhelmed communities, destroying homes, vehicles, and businesses.
Hurricane Harvey (2017)
Source: ABC News
One of the most infamous recent disasters, Hurricane Harvey made landfall in Texas as a Category 4 hurricane, then stalled, releasing historic rainfall over Houston and surrounding areas. The National Hurricane Center reported 68 deaths, with the vast majority caused by freshwater flooding. Harvey resulted in over $125 billion in damages and destroyed more than 300,000 structures.
West Virginia Floods (2016)
Source: USA Today
A seemingly mild rainstorm turned deadly in June 2016, as flooding swept through West Virginia.
The flood killed 23 people and left dozens stranded.
The event exposed vulnerabilities in emergency preparedness and infrastructure across the state.
Superstorm Sandy (2012)
Source: USA Today
Superstorm Sandy was a powerful hybrid system that struck the East Coast in October 2012. The storm caused 147 deaths, 72 of which occurred in the US
Most fatalities were attributed to drowning, and massive storm surges flooded subways, damaged homes, and left millions without power, especially in New York and New Jersey.
Mississippi River Basin Floods (2011)
Source: Britannica
In the spring of 2011, excessive rainfall and record snowmelt caused widespread flooding across the Mississippi River Basin, resulting in 24 deaths across multiple states including Oklahoma, Missouri, and Louisiana. Communities were overwhelmed as levees were breached and emergency systems failed under pressure.
Hurricane Ike (2008)
Source: New York Times
Striking the Texas Gulf Coast in September 2008, Hurricane Ike produced a 20-foot storm surge in Galveston and dumped torrential rains on Houston.
The storm killed over 100 people, many due to floodwaters, and severely damaged homes, roads, and vehicles.
Hurricane Katrina (2005)
Source: YouTube
The deadliest and costliest flood disaster in US history, Hurricane Katrina devastated New Orleans and the Gulf Coast in 2005.
When levees broke, entire neighborhoods were submerged, forcing rooftop rescues. The death toll reached nearly 1,400 people, with damages exceeding $200 billion. The event remains a stark reminder of the catastrophic consequences of flood mismanagement and climate vulnerability.
Tropical Storm Allison (2001)
Source: National Geographic
In June 2001, Tropical Storm Allison stalled over Texas and Louisiana, unloading over 40 inches of rain in parts of Houston. The prolonged deluge caused 41 deaths, with extensive damage to homes, businesses, and city infrastructure. The storm left tens of thousands stranded as emergency services struggled to respond.
From Texas to Kentucky and New Orleans to New Jersey, the destructive force of flash floods has reshaped communities, taken lives, and cost the nation hundreds of billions of dollars.
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