Queensland is being warned to prepare for more rain as some communities hit by the latest flooding still wait for water to recede.

In Maryborough about 30 properties were flooded when the Mary River peaked yesterday.

It has fallen about a metre overnight, but the Lamington Bridge is still cut and several suburbs remain isolated including Granville.

Thousands of homes and businesses are still without power.

The clean-up is also continuing in Gympie which almost broke a 120 year-old summer rainfall record.

Michelle Berry from the weather bureau says the record of 933 millimetres was set in 1893.

"They've had about 460 millimetres of rain for February alone and that's 270 per cent of the monthly average," Ms Berry said.

"Gympie's had 912 millimetres this summer which is just crazy - it's double its average of 470 millimetres."

The weather bureau says up to 150 millimetres is possible in central Queensland, and up to 50 in the Wide Bay region.

Ms Berry says there is also more rain on the way for the south east with showers this morning increasing to rain this afternoon.

"Saturday looks pretty wet at this stage and Sunday we'll start to see the activity breaking up a bit," she said.

"[It] looks like that shower activity then persists into the early part of next week with that ridge developing so a few showers for the first few days of next week."

Residents in areas likely to be cut-off by floodwaters are being warned to stock up on essential supplies.

The coastal town of Agnes Water has been isolated most of this week but the road north to Gladstone re-opened yesterday giving local supermarkets a chance to re-stock.

The Department of Transport and Main Roads says rain is likely to cut Fingerboard Road again.

Gladstone's Deputy Mayor Matt Burnett says residents need to be prepared.

"No doubt the shops there are now thinking we're probably going to be isolated again for a few days so now would be the best time to do their stock ups," he said.

Councillor Burnett says roads in and out of the Boyne Valley south west of Gladstone are likely to be closed until Monday.

The area is also without landline and mobile phone access.

 

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