AAP

Floods at Moree eight weeks ago were like a practice run for what's expected on Friday, says its mayor.

Katrina Humphries says the northern NSW town is as ready as possible, with thousands of sandbags put back from where they were taken away just two months ago.

This flood is expected to be bigger.

Widespread rain has fallen across south-east Queensland and northern NSW over recent days.

At Moree, both the Mehi and Gwydir rivers were predicted to peak on Friday morning, matching or exceeding the 10.6m levels reached in the February 1976 flood.

"Anyone that had water last time knows they're going to have more water," Cr Humphries told ABC Radio.

"Anyone who nearly had water last time knows that they'll probably have water, and anyone that was high and dry has got people in their house."

But the mayor says Moree is more fortunate than some Queensland communities about this time last year.

"I think we've had the blessing of a warning," CR Humphries said.

"We know this is coming and we've had the preparation."

The only unfortunate aspect was that it was still raining in the area.

NSW Premier Barry O'Farrell is expected to visit the region on Friday.

Cr Humphries said she was sure she would not have to tell him anything "because he's got a good set of eyes and he'll see it all for himself".

"I'm sure if Barry would turn the tap off for us he would, but no one can," she said.

"Mother Nature has her way and she'll stop crying when it suits her."