SunWater says up to 30 low-lying properties close to Paradise Dam, near Bundaberg in southern Queensland, could experience minor flooding this week.
Up to 100,000 megalitres of water is being released to make dam repairs, after the floods.
Sunwater chief executive Peter Boettcher says areas inundated in January will be affected but there is no cause for concern.
"The local transport networks that are affected will continue to be affected but no additional low-level crossings will be effected by the release," he said.
"During the peak of the flood in January we had 1.5 million megalitres per day passing over the top of the dam - we're talking about releasing an additional 23,000 litres per day.
"In the context of the Burnett River it's actually a small volume of water."
Mr Boettcher says the Booyal causeway, Wallaville Bridge and Perry River Bridge will be monitored closely.
"There will be a small increase in river levels downstream but no significant flooding," he said.
"If it's already affected by floodwater by the current river flows then it would continue to be affected.
"The existing low-level crossings will continue to be inundated for the next four to five days associated with our release."
© ABC 2013
16:02 EDT With plenty of sunshine on the way, Queenslanders will feel the heat begin to build as a hot airmass works its way east.