Between 200 and 300mm fell across the state over 48 hours, the Bureau of Meteorology said on Saturday.
The state's highest rainfall was 179mm at Bellthorpe, located between Brisbane and the Sunshine Coast.
The Mary River, which runs through Gympie, is expected to peak at about 16m with major flooding possible at Tiaro late Sunday morning.
Rainfall dropped considerably on Friday night with only 10 to 20mm recorded over a six-hour period.
"That easing trend is good news," the bureau's Matthew Collopy said on Saturday
But there are still major flood warnings in place for the Condamine, Logan and Bremer rivers, and the Warrill, Laidley and Lockyer creeks.
Most of those waterways have already peaked or will peak later with flood warnings easing over the next few days.
Acting Deputy Police Commissioner Shane Chelepy has warned residents not to get complacent.
"While we're seeing the rain easing...we still have a number of creeks that are flowing," Mr Chelepy said on Saturday.
"It is highly likely that you'll still see road closures. Please don't enter those roads."
Eighty-seven buildings have been affected by flood waters in Warwick, with 49 people using shelter services due to the Condamine River breaking its banks.
All Queensland beaches have been closed over the weekend due to coastal erosion and heavy surf conditions.
Queensland Emergency Services Minister Mark Ryan said schools should resume on Monday unless cut off or damaged by floods.
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