Three people are dead and the toll could rise as eastern Australia mops up from a massive storm which has decimated hundreds of properties and still threatens more.
Two bodies were found in cars caught in NSW floodwaters in separate incidents in the southern highlands and Sydney, while a man died after powerful waters flipped his two-tonne ute in the ACT.
Two elderly people are missing in Tasmania and a swimmer has vanished in the surf at Bondi Beach in Sydney.
The body of a 65-year-old man was found on Monday in a car in Mittagong Creek near Bowral, while the body of another man was found in a ute at Leppington in Sydney's southwest.
A 37-year-old man's body was retrieved from an island on the Cotter River in the ACT on Monday morning, 200 metres downstream from where the car was first spotted on Sunday.
Emergency services say they're "absolutely frustrated" by people who enter floodwaters despite repeated warnings to stay away from them, with both police and the NSW SES stressing people are placing their lives at great risk by doing so.
"Please heed our advice, your life could depend on it," Acting Assistant Commissioner Kyle Stewart said, adding many of the 290 flood rescues across NSW could have been avoided.
A search for an elderly man who was swept away by floodwater in Ouse in northern Tasmania has been suspended as dangerous conditions also prevent rescuers from looking for a missing woman in Latrobe.
Her husband was rescued from the roof of their property by helicopter.
The NSW storm has moved off the south coast and conditions have eased but authorities warn the danger isn't yet over.
A second king tide is forecast for Monday night and it could cause further flooding and erosion, the Bureau of Meteorology has warned.
"We're not completely out of the woods yet," a forecaster said.
Massive seas have battered Sydney beach suburbs, with waterfront homes in Collaroy on the northern beaches at risk of falling into the surf on the king tide.
The beach at Collaroy has been consumed by eight metre waves, with backyards, balconies and a swimming pool slipping into the sea.
Around 700 homes in neighbouring Narrabeen were evacuated.
Coogee beach in the east has also been hit hard, with its surf club in danger of collapse.
Hundreds of homes and businesses have been inundated to the southwest of Sydney in Picton, Camden, Chipping Norton and Milperra, while more than 2000 residents in Lismore were also forced to leave their homes.
Flood warnings remained in place on Monday afternoon for a number of NSW rivers and coastal homes after the vicious storms left 545 properties isolated.
A flood watch is current for all Tasmanian river basins after parts of the state were drenched in more than 200 millimetres of rain over the weekend.
Several people have been rescued from flooded properties in Latrobe, Ouse, Newstead and the Meander Valley.
The Bureau of Meteorology says the heavy rains inundating Tasmania will not ease until Tuesday and wet weather is forecast for the rest of the week.
Evacuation centres have been set up in Launceston, East Devonport, Deloraine and New Norfolk for affected residents.
The damaging low-pressure system brought heavy rain over Victoria's east coast, but has eased after more than 150mm fell on some areas at the weekend.
