"Townsville has seen over a metre of rainfall in 10 days, which hasn't been recorded there before".
On Tuesday night two police officers were left clinging to a tree branch when they were overwhelmed by floodwaters while helping with evacuations.
Two other people were plucked to safety from the roof of their auto at Hyde Park nearby.
There are fears thousands of others could have been inundated overnight.
One Twitter alert yesterday urged residents to scramble to higher ground.
Townsville residents have reported at least three crocodile sightings in the floodwaters, sharing photos of the creatures on social media.
Seen is a general view of a blocked major intersection in the flooded Townsville suburb of Idalia on February 4, 2019 in Townsville, Australia.
"Anyone out there with a boat please go to ..."
"I'm really imploring to the people in those vulnerable areas, start thinking now about what you are going to do". "Water is raising (sic) fast", his wife Bronywn had previously written.
The floodgates of the city's dam were opened to prevent the Ross River from breaking its banks, flooding some suburbs.
Residents had to be rescued from their rooftops last night as the dam's waters swept through.
Britain will take ‘a few days’ to formulate Irish border proposals - Hunt
For them to move now, she will have to show them that anything they give will be the final deal and it will be accepted. Corbyn said after a 45-minute meeting with May that he was "suspicious" of the prime minister's intentions.
"Can anyone please help", Nicole Brewster wrote.
According to the Bureau of Meteorology, the flood risk will continue for the rest of the week.
Swiftwater rescue crews were operating through the night as water levels continued to rise.
"They've held together and they've kept each other safe". "We don't want to get to that stage [but] we can't control that". We have a grey ute out the front (for as long as it can be seen anyway). The reptile was spotted somewhere around Palmetum and the Good Shepherd Home.
More than 1,100 people have been evacuated from the town after a "once in a century" flood. "We still have many roads that are cut around those areas".
Townsville remains the hardest-hit area although floodwaters are affecting communities as far west as Mt Isa, in the state's interior.
Premier Annastacia Palaszczuk has gone to the disaster zone and is expected to provide an update from Townsville at about 6.30am.
"We've never seen anything like this before", she told Today. "So, once again, our message is, if you don't need to be out on the roads, please don't", she added.
"We have had so many of these natural disasters over a short period of time", the premier told reporters on Sunday, referring to earlier floods and cyclones over the summer months.
Ergon Energy's spokesperson Emma Oliveri told the AFP that more than 16,000 people were without power and they are unable to say when the lights will come back on. About 1000 people have taken refuge in those centres.