Beaches survive and attention turns to rising Mary River

THE attention of the Local Disaster Management Group has turned to the Mary River as flood waters continue to rise in Gympie.

After Hervey Bay's beaches survived the mammoth swell on Saturday morning, low lying parts of Maryborough and Granville are now being asked to brace for isolation.

Fraser Coast Mayor Gerard O'Connell said the flood peak in Gympie was predicted to hit 17m.

"We're now turning our attention well and truly to the rising river levels of the Mary River," he said.

"(There's) every possibility that the Lamington Bridge will go under and therefore be closed late on Sunday."

Early flood modelling predicts Granville may be isolated late Sunday or early Monday.

However the LDMG will have a better understanding of exact times and heights at midday on Sunday.

Cr O'Connell said the work council crews did sand pushing ahead of the huge tides in Hervey Bay had worked.

"Although there's been some erosion it hasn't gone back to the major dune system," he said.

But Sergeant Darryn Morris from Hervey Bay police has reminded the public that all beaches are closed as well as piers and jetties and boat ramps until further notice. Walkways have been blocked off with safety fencing and these areas are no-go zones until coastal conditions improve.