Queensland residents have been told to prepare for the 'unbearable stench' that follows a flood as the massive clean-up begins.

Officials are keeping a close watch on flood levees protecting a town bordering Queensland and New South Wales as water levels creep within 40cm of their 11 metre limit.

The water is starting to recede in Queensland but the body count continues to rise in the devastated Lockyer Valley region where dozens of people remain missing.

No bodies have been found in a mass of cars washed under a Queensland town's rail bridge where authorities feared they would find several people dead.

The threat of looting is making Queensland flood victims reluctant to evacuate their properties.

Brisbane's mayor has called on residents to 'put the shoulder to the wheel' and help clean up.

The frightening power of the brown surge heading towards Moreton Bay leaves no mistake about the devastation that this flood has done.

Find out what people are saying about the Queensland floods in social media.

The Brisbane River peaked at 4.6m this morning with residents warned there would be shocking scenes of devastation.

A flood survivor has described trying to grab people fighting for their lives only to find they were bodies in turbulent water.

Sunday's A-League soccer match between the Wellington Phoenix and Brisbane Roar at Suncorp Stadium has been postponed.

The death toll from flooding in the Toowoomba region has risen to 12 with the discovery of two more bodies, while the full impact of the flood terror is now reaching the town of Grantham, where up to 30 could be dead.

Three thousand homes in Ipswich, southwest of Brisbane, are now under water and 1500 people have gone to evacuation centres, with the predicted flood peak still three hours away.

Peaking river levels in Brisbane could have a devastating effect this evening, with almost 20,000 homes expected to be swamped by tomorrow. Meanwhile, 56,000 homes and businesses are without power and a fire has started at Suncorp Stadium.

The cause of today's flooding in Brisbane is very different to the devastating floods in Toowoomba yesterday.

Sunday's A-League match between the Wellington Phoenix and the Brisbane Roar is in further doubt after a fire at Suncorp Stadium.

Up to 33 per cent of Ipswich, 40km south-west of Brisbane, could be underwater in hours, with floodwaters from the Bremer River, which have already submerged entire blocks of the CBD, set to peak around 2pm (NZT).

Brisbane is bracing for a high tide this afternoon as thousands evacuate due to flooding in Queensland that has left 10 dead and another 90 missing.

Toowoomba boy Jordan Rice, 13, has been remembered as a hero after he let his younger brother be rescued first.

A decision is expected today over a possible postponement of the A-League match between the Wellington Phoenix and Brisbane Roar.

Back on January 1 authorities said Queensland was facing a flood of "biblical proportions". Now, almost two weeks later, and it's hard to fathom that the "worst is yet to come" as unprecedented flooding hits the drought ravaged region.

A Kiwi living in Brisbane described the city as total chaos yesterday as people were evacuated.