Major floods swamp Australia's east coast, claiming eight lives

In this photo provided by the Queensland Fire and Emergency Services water floods land and buildings near Gympie, north of Brisbane, on February 27. Photo / AP

Parts of Australia's third-most populous city Brisbane were under water today after heavy rain brought record flooding to some east coast areas and killed eight people.

The flooding in Brisbane and its surrounds is the worst since 2011 when the city of 2.6 million people was inundated by what was described as a once-in-a-century event.

The latest fatality was a man aged in his 50s who drowned on Monday after driving his car into floodwater before dawn at Gold Coast city, south of Brisbane, Queensland state police said.

The bodies of the man and his dog were retrieved hours later from a submerged car which had been washed from the road, a police statement said.

Queensland emergency services warned life-threatening flash flooding was occurring in parts of Gold Coast.

Emergency crews made more than 130 swift-water rescues in 24 hours, officials said.

All eight flood deaths have been in Queensland state, of which Brisbane is the capital. A search continues for a solo sailor, aged in his 70s, who fell overboard from his vessel in the Brisbane River near the city centre on Saturday.

Police were also searching for a man missing from Goodna, west of Brisbane and another Esk, northwest of Brisbane.

South of the Queensland border, police on Monday were searching for a man after officers heard him calling for help on Sunday in floodwaters in the New South Wales town of Lismore.

More than 400 people are currenty missing in Northern NSW, 9News Sydney reports.

More than 400 people are missing in Northern New South Wales, after days of torrential rain triggered some of the worst flooding on record.

Emergency crews and locals have spent the day rescuing people, but hundreds of lives are still on the line. @WesternWilson9 #9News pic.twitter.com/UYlYAX74jp

— 9News Sydney (@9NewsSyd) February 28, 2022

Police warned downtown Brisbane businesses along the river waterfront to evacuate after a pontoon carrying a crane broke from its moorings upstream and began riding the floodwaters toward them.

Multiple emergency flood alerts were in place for Brisbane suburbs, where 2,145 homes and 2,356 businesses were submerged on Monday. Another 10,827 properties were partially flooded above the floorboards.

The Brisbane River peaked on Monday at 3.85m, officials said.

That was 61cm below the 4.46m flood level reached in 2011, officials said.

Queensland Premier Annastacia Palaszczuk said the rainfall over Brisbane had been extraordinary since November when authorities were considering water use restrictions due to a shortage.

"It is still a significant event, and I think everyone would agree no one has seen this amount of rain in such a short period of time," in the southeastern area, Palaszczuk said.

Brisbane Lord Mayor Adrian Schrinner said the floods are "very different" to 2011 because the rain pummelled the region for five days. In 2011, the rain had stopped days before the Brisbane River peaked and authorities had warned for several days of flooding downstream.

Queensland Transport Minister Mark Bailey said major roads had been cut. Train and ferry services across Brisbane have been halted, he said.

"We're going to have localised flooding in a lot of areas for a couple of days yet," Bailey said.

Lismore was bracing for its worst flooding on record.

Downtown Lismore was inundated on Monday after days of unrelenting rain and 15,000 people had been evacuated, officials said.