VIDEO: Floodwater enters house in Australia's Queensland

Major flooding in northern Australia has begun to ease but many towns remain isolated in crocodile-infested waters as supplies dwindle.

Extreme weather driven by ex-tropical cyclone Jasper has dumped a year's worth of rain on parts of Queensland.

Some rivers have swollen to record levels, flooding homes, severing roads and power, and forcing people to flee houses in boats. One man is missing.

One badly-hit town is now being evacuated after a failed first effort.

Australian media reported that about 20 people had been airlifted from Wujal Wujal by military helicopter. 

A frightening video has emerged on Facebook showing the terrible floodwater invading into house after Cyclone Jasper hit coast of north Queensland in Australia. 

Queensland authorities say the rain is now less intense, and river levels have begun to fall.

State officials have promised essential supplies including medicine are being urgently flown to towns across the region.