An urgent danger to life warning has been issued as floodwaters submerge the city of Lismore on the northern NSW coast on Monday and more rain expected for Tuesday..
Terrifying footage of the collision shows the houseboat flying down the Brisbane River at a rapid pace before smashing into a ferry terminal and sinking beneath the fast-moving currents.
Dramatic rescues have saved Queenslanders from raging floodwaters including one man pulled to high ground when a bystander heroically dived into the torrent.
The brazen motorist was captured driving into the flooded carpark of the Morayfield shopping centre on Saturday as Queenslanders were urged to stay at home and out of rising floodwaters.