Flood levels are continuing to rise in Townsville, with heavy rain continuing to fall across the region.
Townsville has received more than a metre of rain in the past week - more than 20 times the average for the time of year.
"The modelling says what it is going to say - it could move up to the 10,000, 20,000 [homes]".
"We have not been in this situation before", Queensland Premier Annastacia Palaszczuk told the Australian Broadcasting Corporation (ABC).
Queensland Fire and Emergency Services Commissioner Katarina Carroll said it was impossible to know how many homes had gone under across the city.
Dozens of other locals have posted via social media they're perched on kitchen benches and their rooftops awaiting rescues.
While authorities have this morning been unable to confirm the number of rescues performed overnight, it's understood there were at least two swiftwater rescues, including the one involving police officers.
"We are now sitting on the side of the highway in the cab of his truck and other stranded people are in the back of his B double trailers".
"It is just unbelievable, we've never seen anything like it", Mr Parker said.
9 News reported Monday that entire suburbs of Townsville were completely submerged.
"A lot of young families, they've worked so hard to get themselves into these homes and to see them just damaged so badly, it must just be heartbreaking", he said.
They also had a warning for those venturing out into floodwaters on their own: "Crocodiles may be seen crossing roads, and when flooding recedes, crocodiles can turn up in unusual places such as farm dams or waterholes", says Queensland's Environment Minister Leeanne Enoch.
"Townsville, like communities all across the country, bands together in times of crisis and these floods are no different", he said. AAP Image/Andrew Rankin/via REUTERS Residents evacuating to higher ground in Hermit Park, Townsville, Queensland, Australia February 3, 2019.
"But the monsoonal trough is still siting heavily over those areas", she said.
Disaster officials yesterday defended their decision not to forcibly move stranded residents - with 1,100 people assisted to relocate at the height of catastrophic flooding - despite special powers granted to police under a disaster declaration.
Townsville Mayor Jenny Hill praised the plucky spirit of locals and urged the 185,000-strong community to "hang tough".
Bureau of Meteorology (BOM) forecaster Dean Narramore said this morning that there had been some extraordinary rainfall numbers coming in for the Townsville area, with a number of locations receiving over a metre of rain in the last seven days.