With one life already lost, residents in Queensland's sodden southeast are praying there will not be a repeat of last year's devastating floods.
Some areas have received more than 160mm of rain since Sunday morning.
A man died at Glenwood, between Gympie and Maryborough, after the car he was in was washed off the road during the deluge yesterday morning.
The Department of Community Safety said bystanders spotted another person nearby. "They've said there was a good Samaritan there on the scene when the four-wheel-drive went over the causeway, but we've been unable to confirm those reports," a department spokeswoman said.
Authorities have called off the search for a third person after it transpired that another car had been unoccupied when it was swept away in the deluge.