Residents of New Orleans are marking the 20th anniversary of Hurricane Katrina's devastating landfall on the Gulf Coast.

ABC's Robin Roberts revisits New Orleans 20 years after the destruction of Hurricane Katrina for a news special on rebuilding after the storm.

A decade after 2005's Hurricane Katrina, one Mississippi city began offering property tax breaks to encourage building near the waterfront.

Hurricane Katrina changed New Orleans' education system forever, creating the first all-charter school district in the U.S. The Associated Press spoke with three survivors about their experiences.

Flooding has caused an average of more than 125 deaths per year in the U.S. over the past few decades.

President Joe Biden blasted his predecessor for spreading an “onslaught of lies” about how the federal government is handling the damage from Hurricane Helene as another hurricane, Milton, was on the verge of making landfall in Florida.

Hurricane Francine suddenly dropped an incredible amount of rain on New Orleans.

Flooding in Brazil’s Rio Grande do Sul state ravaged nearly everything needed for economic activity, from local shops to factories, farms and ranches.

Award-winning musician Branford Marsalis is taking on a new job in his hometown of New Orleans.

A federal appeals court has ruled that Congress gave too much power to a nonprofit authority it created in 2020 to develop and enforce horseracing rules.

Southwest Florida is getting some advice from the Florida Panhandle as it moves ahead after Hurricane Ian.

A few miles meant the difference between life and death on the Florida coast when Hurricane Ian struck.

Residents are being allowed to return to a coastal Florida island that was decimated by Hurricane Ian.

A new documentary, “Katrina Babies,” looks at how a generation of New Orleans residents coming of age after Hurricane Katrina, are reconciling with the catastrophic storm that transformed their lives.

Brad Pitt’s Make It Right Foundation and homeowners of the houses built by the program, in an area of New Orleans hit hard by Hurricane Katrina have reached a more than $20 million settlement.

A new United Nations report says disasters are on the rise and are going to get worse.

Louisiana students were just getting back to class after a year and a half of COVID-19 disruptions when Hurricane Ida struck.

A Louisiana man who built a levee around his home after Hurricane Katrina thought he was winning the battle against Hurricane Ida.

The levees, floodwalls and floodgates that protect New Orleans held up against Hurricane Ida’s fury, but costly upgrades to the city's flood protection system couldn't spare some neighboring communities from the rising water.

Sure, Hurricane Ida looks an awful lot like Hurricane Katrina, bearing down on the same part of Louisiana on the same calendar date.

Hurricane Ida knocked out power to the entire city of New Orleans, hours after blasting ashore as one of the most powerful storms to ever hit the U.S., New Orleans government officials said.

A Louisiana sheriff’s office has reported the first death from Hurricane Ida.

Sure, Hurricane Ida looks an awful lot like Hurricane Katrina, bearing down on the same part of Louisiana on the same calendar date.

New Orleans finds itself in the path of Hurricane Ida 16 years to the day after 2005's Hurricane Katrina caused catastrophic flooding.

Residents across Louisiana’s coast rushed to prepare for the approach of an intensifying Hurricane Ida.

New Orleans Mayor LaToya Cantrell has ordered a mandatory evacuation for a small area of the city outside the levee system.

Still, any fragment of possibility is enough for some Trump supporters to reject reality, feel aggrieved and rebuff Biden's calls for unity. Several Trump supporters interviewed by The Associated Press in recent days were rankled by widespread celebrations of Biden's win in liberal cities. They saw hypocrisy in the public, outdoor gatherings after Democrats condemned Trump supporters for attending big rallies — some were held indoors — during the coronavirus pandemic. Piotrowski, like many Trump supporters, wants to see Trump’s legal challenges continue. Unlike many Trump supporters, Michelle Sassouni wasn't shocked by the outcome of the election or the aftermath.

– As rain and wind from Sally starting reaching the Gulf Coast, the manager of a Mississippi alligator ranch was just hoping he wouldn’t have to deal with a repeat of what happened during Hurricane Katrina. That’s when about 250 alligators escaped their enclosures as storm surge pushed water over the grounds. “I’m thinking a sigh of relief somewhat,” said manager Tim Parker, who took over Gulf Coast Gator Ranch & Tours after Katrina. As the hurricane moved east of Mississippi, the surge forecast was reduced to no more than 4 feet (1.2 meters). Parker’s farm has alligators up to 14 feet long, roaming and swimming through ponds, sand dunes and tall marsh grass.

A girl wades towards her flooded home the day after the passing of Tropical Storm Laura in Port-au-Prince, Haiti, Monday, Aug. 24, 2020. Laura battered the Dominican Republic and Haiti on it's way to the U.S. Gulf Coast, where forecaster fear it could become a major hurricane. Now forecasters are turning their attention the Gulf Coast, where up to 11 feet (3.4 meters) of sea water storm surge could inundate the coastline from High Island in Texas to Morgan City, Louisiana, the hurricane center said. Hurricane Rita then struck southwest Louisiana that Sept. 24 as a Category 3 storm. We might have dodged a bullet with Marco, and obviously some people along the Gulf Coast are not going to be as blessed as us.___Martin reported from Marietta, Georgia.

Hospitals plan for catastrophic events, but there are always lessons to be learned. Planning is paramountEach hospital is required to have an emergency plan, usually approved by the hospital's accrediting body. One of the most difficult decisions facing a hospital's leadership team as it prepares to face a storm is the decision to evacuate some or all of the hospital's patients. Hospital staff prepare the hospital to weather a storm. In the aftermath of a disaster, hospitals may suffer power loss.

NEW ORLEANS - Tropical Storm Barry moved deeper inland Saturday night, dumping heavy rain and overtopping levees in areas along the Louisiana coastline. The storm was briefly upgraded to a Category 1 hurricane Saturday morning but quickly weakened to a tropical storm when it made landfall near Intracoastal City, Louisiana, later in the afternoon. There were storm surge warnings in effect for everyone from Intracoastal City, Louisiana, to Biloxi, Mississippi, and for Lake Pontchartrain. At that time, 330 households along Highway 315 and Brady Road were put under mandatory evacuation orders in Terrebonne Parish, parish spokesman Mart Black told CNN. "This means that New Orleans residents are not out of the woods with this system," she said in a statement.

Tropical Storm Barry is now threatening to blow ashore as a hurricane, packing drenching rains "that could test the flood-control improvements made in New Orleans since Hurricane Katrina 14 years ago," the Associated Press said Thursday. The tropical storm formed off the coast of Louisiana earlier in the day. This could be bad for the Mississippi River. The @nwslmrfc has lowered the forecast for the Mississippi River at New Orleans to 19ft. Mandatory evacuations were ordered for people living near the Mississippi River at Louisianas southeastern tip.

Sean Gardner/Getty Images(CNN) - New Orleans was built above sea level, but over time, it's been sinking. And from Hurricane Katrina in 2005 to threats of flooding this week, a few facts on -- and in -- the ground explain why the Big Easy is uniquely vulnerable to massive flooding. Settlers who got the best land were able to build only about 10 feet above sea level. By the 1930s, one-third of the city was below sea level, according to the New Orleans Times-Picayune. Scientists found that the ground in the area was sinking at a rate of 1 centimeter a year.

Singer Harry Connick Jr. testifies during a hearing on Hurricane Katrina relief before the Senate Finance Committee in October 2005. Distributed by LAKANA. This material may not be published, broadcast, rewritten or redistributed.

2005: Hurricane Katrina makes landfall as a Category 3 hurricane in southeast Louisiana. Katrina would go on to devastate much of the U.S. Gulf Coast from Louisiana to the Florida Panhandle, killing more than 1,836 and causing more than $80 billion in damage. The most significant number of deaths occurred in New Orleans, which flooded after the city's levee system catastrophically failed, in many cases hours after the storm had moved inland. Hide Caption

ROANOKE (WSLS 10) - Two best friends who grew up together in Mississippi went their separate ways after being displaced by Hurricane Katrina. This weekend, the two will attend a high school reunion they thought would never happen. A high school yearbook brings bacCopyright by WSLS - All rights reservedk fond memories for Erika Lovegreen and Casey Figgins. However, it also serves as a reminder of Hurricane Katrina, which Biloxi High School at the start of their senior year in 2005. On Wednesday, the duo began the trip back to Biloxi for the "Class of Katrina" reunion.