EAST BATON ROUGE, La. — More than 20,000 people have been rescued after massive floods swept across Louisiana, and officials warned Sunday that even though the rain had subsided, dangers loomed.
"It's not over," Gov. John Bel Edwards said Sunday. "The water's going to rise in many areas. It's no time to let the guard down."
Edwards said crews had already rescued more than 20,000 people and hundreds of pets. More than 10,000 people — many in the Baton Rouge area — were in shelters on Sunday night, Edwards said during a news conference.
The flooding killed at least four people. The latest casualty was reported Sunday night, with officials confirming that a 59-year-old man was swept away by the current while walking along a road in Tangipahoa City on Friday. The man, who was not identified, drowned, said Devin George, director of the state registrar.
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Sunday brought drier weather, but residents in affected areas were warned to stay in their homes and off the roads — unless they're told to evacuate. "Even a typical afternoon summer thunderstorm has the potential to cause flooding," Edwards said.
The Amite River in Denham Springs had already reached historic levels and was expected to rise 4½ feet above the record, according to The Weather Channel.
Livingston Parish was among the hardest hit, with some towns completely cut off. Hundreds of motorists were stranded along the interstate, officials said. In Baton Rouge, Louisiana State University announced that it was shuttering its main campus there on Monday.
More than 1,700 rescue personnel had been mobilized and nearly 170 high-water vehicles had been tasked or staged, according to the Louisiana National Guard. An additional 800 guardsmen will likely be deployed.
The Coast Guard was also assisting in the rescue efforts, using helicopters to help residents from their rooftops, cars and trailers.
The state Transportation Department said more than 100 roads have been closed across the state. In Jefferson Davis Parish, so many roads are impassable that Sheriff Ivy Woods declared a 6 p.m. curfew so motorists don't get stranded overnight.
"All our parish roads north and south — they're inoperable," Woods told NBC station KPLC of Lake Charles.
Gabe Gutierrez is an NBC News Correspondent based in Atlanta, Georgia. He reports for all platforms of NBC News, including "TODAY," “NBC Nightly News," MSNBC and NBCNews.com.
Cassandra Vinograd is a Senior Writer and News Editor. Before joining NBC News, she worked as a London-based correspondent for The Associated Press and specialized in politics, foreign affairs and defense.
Vinograd previously worked as an editor for The Wall Street Journal in Brussels and London.
She has reported extensively from Afghanistan and on West Africa and the Middle East.
Elisha Fieldstadt is a breaking news reporter for NBC News.