Motorists are warned to take care on the roads with more rain expected.
Motorists are warned to take care on the roads with more rain expected.

More rain expected as deluge tops up dams

This week's deluge has added three months of extra drinking water for southeast Queensland residents, with many dams replenished to near-capacity.

More rain is expected this weekend for parts of western and south-east Queensland.

Premier Annastasia Palaszczuk said the significant rainfall had, however, caused flooding to several parts of the state.

"Currently two-thirds of Queensland is drought declared," Ms Palaszczuk said.

"We have needed prolonged soaking rain for months, particularly for our farms and water storages.

"However, the significant rain, in excess of 500mm in some areas, has caused flash flooding and I urge all motorists to heed the warning - it's flooded, forget it."

Major flooding remained a concern on Thursday night around Baffle Creek, and extra Swift Water Rescue teams were on standby around Gympie, Maryborough and Bundaberg.

The deluge has added 3½ months of drinking water to southeast Queensland's drinking supply, with 86 billion litres of rainfall entering the regions' dams.

Water Minister Mark Bailey said: "This has been a good boost to our dams ahead of summer, but we will need further rainfall to get our drinking water dams back to 100 per cent capacity," 

"The region's largest dams also received a boost in supply. Wivenhoe Dam has increased by 2 per cent, Somerset Dam has increased by 6 per cent and North Pine Dam has increased by 5 per cent,"  Mr Bailey said.

"Across the region, eight dams are now spilling, with another seven recording water levels above 90 per cent."

The Bureau of Meteorology has advised that showers will remain over parts of the tropics while a new weather system develops in the state's southwest corner.

Birdsville and Thargomindah are forecast to have thunderstorms and showers on Friday, while the southeast can expect about 10mm tomorrow.