AgForce president Brent Finlay said conditions around Mitchell were "very grim" and predicted the situation could deteriorate as floodwaters moved south.

"It's flooded in areas around Mitchell where they've never seen flooding before," he said.

"We're now seeing the water spread out as it moves on to that flatter country further south. Then we'll see more damage over a much wider area, threatening stock and damaging infrastructure."

Mr Finlay said for many districts the flooding was worse than last year's January disaster. He urged landholders to consider their personal safety first before considering their livestock.

"The situation is very dangerous," he said.

"I know there are landholders worried about their livestock and they want to move them to higher ground, but they need to take precautions and think about their own safety first."

Mitchell beef producer and AgForce Cattle president Grant Maudsley said fears were high that stock losses would be significant.

Mr Maudsley said his property west of Mitchell received 75 millimetres on one night, but other areas had been inundated with more than 150mm in a 24-hour period.

The rain had eased by late last week, but he was still concerned by forecasts of more falls.

The Maranoa River at Mitchell reached 9.35 metres near a peak of 10m late last week.

Maranoa Mayor Robert Loughnan said at the height of the crisis 160 evacuees at the Mitchell State School were air-lifted to the council's Mitchell depot evacuation centre.

"A power outage at the Mitchell State School evacuation centre made the transfer of evacuees essentia," Cr Loughnan said.

Rising water had affected homes in Mitchell and council and emergency services staff were continuing to investigate damage to homes, businesses and infrastructure in the town.