At least 64 people have died in the US after the country’s northeastern states were battered by record-breaking rainfall brought by Storm Ida.

The deaths include at least four people who died from carbon monoxide poisoning in Louisiana, two dead in Mississippi after torrential rain caused a highway to collapse, and a number of people killed after their cars were swept away by floods – one of them a Connecticut state trooper.

According to state figures tracked by NBC News, there have been:

• 25 deaths in New Jersey

• 17 deaths in New York

• 11 deaths in Louisiana

• Five deaths in Pennsylvania

• Two deaths in Mississippi

• Two deaths in Alabama

• One death in Maryland

• One death in Connecticut

Slide across the before and after images from New Jersey below:

New Brunswick

New Jersey baseball park

Manville

At least 11 of the deaths in New York were in flooded basement apartments, such as a family of three, including a toddler, who were not able to get out before the water rushed into their home.

Most of those who died in New Jersey drowned after their vehicles became caught in floodwaters, with some getting swept away when they got out of their cars into fast-moving water.

Clean-up efforts are under way as ruined cars, mud, and debris were hauled away from streets, while New York City’s subway services were able to resume most services.

Leaders in some states pledged to examine whether a similar catastrophe could be prevented in the future.

Although New Jersey and New York spent billions of dollars to improve flood defences after Superstorm Sandy affected the region in 2012, most of that funding was only focused on the coastal areas and tidal floodplains.

New York Governor Kathy Hochul said inland areas needed to be better prepared for more frequent flash flooding due to climate change.

“One thing I want to make clear: we’re not treating this as if it’s not going to happen again for 500 years,” she said.

New Jersey and New York expect to receive significant funding and assistance from the federal government after President Joe Biden approved disaster declarations in both states.

New Jersey Governor Phil Murphy also announced $10m in state grants to help small businesses that suffered damage.

Mr Biden will visit Louisiana on Friday to survey the damage caused by Ida after the storm made landfall there on Sunday, where more than one million people were left without power.

Tales of heroism and selflessness emerged across the US amid the mounting death toll.

In the northern suburbs of Philadelphia, Pennsylvania, Donald Bauer helped his wife Katherine climb through the busted back windshield of their flooded car late on Wednesday.

“My father started pushing my mom out, and telling her to go and go and go,” said the couple’s son, Darby Bauer.

“All she remembers from being pushed out of the car was him touching her one last time, shouting at her to go.”

Mrs Bauer held on to a tree as the rising waters carried their Mazda SUV out of sight.

She was rescued about an hour later, but her husband was found dead in their car on Thursday morning.

At an apartment complex in Elizabeth, New Jersey, where four people died, an 87-year-old woman was rescued from her flat as she stood in her sink in waters up to her neck.

A hole was cut through the floor of the flat above hers, and she was pulled through it.

Ida wreaked havoc along the Gulf Coast as it was downgraded to a tropical storm, before causing flooding and at least 10 tornadoes.

Rainfall in New York’s Central Park broke a 94-year record, while Newark, New Jersey, smashed a 62-year record, the National Weather Service said.

Hundreds of vehicles were abandoned on flooded highways, rubbish bobbed along in the water, and the city’s subway tunnels were overwhelmed, with at least 17 trains trapped.

Video footage showed passengers standing on seats in train carriages as the water rose, but NBC reported that 835 people were safely rescued.

Similar weather has followed hurricanes before, but experts said this situation was made worse by climate change – warmer air holds more rain.

The fact that cities have more concrete also had an effect, as concrete stops the water from being absorbed by the ground.