Queensland mops up after rains

Queensland's southeast is mopping up after some of the highest rainfalls seen in the Australian state for almost a century.

Forecasters say the worst is over for the southeast, but major flood warnings remain in place for central Queensland where a woman was swept to her death at a swimming hole on Sunday.

Falls in two Gold Coast hinterland towns were once in a lifetime events, the Bureau of Meteorology said.

Mount Tambourine and Canungra were swamped with more than 360mm in the 24 hours to 9am (AEST) on Sunday.

"Canungra - that's the heaviest rainfall in 92 years of records and at Mt Tambourine in 105 years of records - daily rainfall amount," weather bureau spokesman Gavin Holcombe told the ABC.

He said such extreme events were very hard to forecast, and actual falls were much higher than the 100 to 200 millimetres expected.

Across the southeast, the clean up continues on Monday including on the Coomera River between Brisbane and the Gold Coast, where dozens of boats broke their moorings at the height of the deluge.

Two deaths have been blamed on the weekend drenching including a 47-year-old mother swept away from her family when a wall of water came rushing through Bouldercombe Gorge south of Rockhampton on Sunday.

The day before, a teenage boy drowned when the car in which he was travelling tried to cross a flooded crossing at Toowoomba, west of Brisbane.

Forecasters are continuing to warn of major flooding along the Comet River at Rolleston in central Queensland.

Flood warnings are also in place for coastal streams from Gympie south to the NSW border.

The weather bureau says the drenching that hit the southeast is over, and only showers are expected on Monday.

The State Emergency Service dealt with more than 270 calls for help at the weekend, as water inundated homes and swamped cars.

The latest figures show the Gold Coast hinterland received the heaviest falls of 415mm in the 24 hours to early Monday morning, while the Sunshine Coast received up to 130mm.

- AAP