Heavy rain falling across a widespread area of Queensland's south-east has mostly dissipated on Sunday afternoon, but the Bureau of Meteorology (BOM) has warned sodden catchments could still flood later in the week amidst light showers.
Forecaster Matt Collopy said over the past 24 hours most rain-affected regions received between 10 to 25 millimetres of rain.
"There have been some isolated locations that have received falls above 50 millimetres, but they've mostly been around the high ground of the Scenic Rim, inland from the Gold Coast," Mr Collopy said.
"Whilst we've still got this sort of moist, easterly extreme, we're still seeing its light drizzly sort of rain impacting south-east Queensland, but it will continue to ease and we will see some of that cloud and that really grey weather start to break up this afternoon.
"We're continuing to see an easing trend in the shower activity and that will continue into Monday, Tuesday and Wednesday."
He said while the majority of the rainfall was expected to break up over the coming days there could still be some showers.
"Even small amounts of rain are a concern and they will prolong the sort of water sitting around in those catchments as well as any flooding that is occurring," he said.
"Now there is a hazardous surf warning current from the Fraser Coast right down to the Gold Coast, very large swells moving to the Queensland coast and impacting our beaches in terms of the wave heights as well as the potential for erosion."
He said while the major flood peak for the Condamine River has moved from Warwick, it is expected to peak at Warkon this evening.
"It will reach right down into St George but we're only expecting minor flood levers down there," he said.
"The Condamine and the Ballone is a very complex river system with multiple flood peaks moving down, and it will play out over the next sort of seven to 10 days for quite a long, extended period of flood watches and warnings that we'll have to say across."
The Brisbane River is expected to reach close to the minor flood level at about 1.7 metres on high tide this evening.
"We are expecting to see light shower activity through the middle part of this week. There is some potential for another weather system from Thursday through about Saturday," he said.
"We are monitoring that closely — there is potential for increased rainfall. Nowhere near as widespread or as significant as what we've just seen."
Gympie, Warwick affected by flooding
Mr Callopy said the Mary River at Gympie peaked last night just above 16 metres and was expected to stay above the moderate flood level throughout the day.
He said flood levels for the Bremer River In Ipswich and the Laidley and Lockyer creeks in the Lockyer valley were continuing to ease.
Gympie Mayor Glen Hartwig said the homes affected had already been damaged by flooding earlier this year.
"They haven't been repaired since the last time, so there are no people in them," he said.
The town was isolated on Saturday, the CBD was inundated and businesses had some water through them.
About 800 Gympie businesses and homes were impacted by floodwaters in February and many are yet to get back to normal. Many properties in the region also flooded in January.
Acting Deputy Police Commissioner Shane Chelepy said the bridge into the town has been opened now
"The Bruce Highway is open north to south through Gympie with some diversions in place. We did have approximately 30 persons, tourists, in an evacuation centre, we now expect those people to be able to continue on with their trips and their holidays," he said.
He said about 11 businesses in the Gympie were affected by flooding, while 26 homes and 22 businesses in Warwick were affected.
"Those clean-ups have already started out there, but I thank everyone in Warwick and Gympie for staying alert to our warnings and working with us," he said.
"It's great to see that we've had no additional deaths overnight as a result of this event."
State Emergency Service personal completed 130 tasks over the last 24 hours and have so far assessed 282 properties for damage in the Lockyer Valley and Southern Downs.
Red alert issued for Maryborough
The Gladstone regional harbour master has issued a red alert for the Mary River at Maryborough, with levels now likely to exceed the minor flood level of five metres. It may peak between five and six metres on Monday morning with minor flooding.
Lamington Bridge on Maryborough-Hervey Bay Road at Maryborough was closed on Saturday afternoon due to flooding.
Fraser Coast mayor George Seymour said the town was tired but ready.
"Earlier in the year we had a flood of 10.3 meters, so a major flood, we're prepared for this. And a minor flood doesn't affect nearly as many residents and businesses as were affected in February," he said.
Residents were evacuated from flood-affected homes in Warwick by boat on Friday.
Eighty-seven buildings were affected by the Condamine flooding and 49 people were forced to evacuate but Southern Downs Mayor Vic Pennisi said the majority of people had now returned to their homes.
"Everyone's dry and has got food tonight," he said.
"The real extent of the damage will be known in a few days, but anything that can be started has been started.
"I think largely people are feeling that we've dodged a bullet in many respects. Yes, there has been a lot of impact, but not as much as it could have been, so I think they're grateful for that."
Rain causes problems at water treatment plant
Seqwater has asked residents in Brisbane, Ipswich and Logan to conserve water because the extreme weather has impacted the Mt Crosby Water Treatment Plants and they are temporarily operating at reduced capacity.
"This is as a result of floodwaters washing soil and debris into the creeks and waterways, which flow into the treatment plants," it said in a statement.
"This is a precaution only. The drinking water being supplied to homes and businesses remains safe to drink and meets the Australian Drinking Water Guidelines. There is no need to boil your water or buy bottled water.
"Our crews are working hard to get the treatment plants back to normal operations."
SES groups working non-stop for months
Queensland Fire and Emergency Services State Operations Commander Andrew Short said it had been a particularly busy season for the SES, swift water rescue teams and fire and rescue personnel.
"We're up to 16,000 tasks now for SES since February, and up to 727 swift water incidents," Mr Short said.
"These are really big numbers. And with that in mind, I'd like to encourage that if community members happened to come upon an SES volunteer or one of the fire rescue operators, thank them.
"Thank them for their work which has been extended work. They've just kept backing up. Many of our SES groups have essentially not been stood down now for months."
Emergency Services Minister Mark Ryan urged the community to take extra care when out and about.
"Because we've had this prolonged wet season, the ground is also saturated now, which means that trees might be unstable," he said.
"We've still got water around, so drains, creeks and rivers are not places for people to be, particularly children.
"Parents, can you please keep an eye on your kids for the next few days. Keep them out of drains, creeks and rivers."
He said disaster assistance payments of $190 per person and $900 per family have been activated for flood affected residents of the Lockyer Valley and Southern Downs.
