Police say a mother-of-three, whose body was found beside a Queensland river, was probably murdered.

A woman found dead beside a river on the Queensland-NSW border is likely to have been murdered, police say.

Mother-of-three Alexis Jeffery, 24, was found at the edge of the Macintyre River in the Queensland town of Goondiwindi late on Sunday morning.

The local resident was last seen alive in Goondiwindi’s town centre at 3.30am on Sunday.

Acting Superintendent David Isherwood said the dumping of the woman’s body on a levy bank made foul play likely.

“It’s probably 20 metres from the actual top of the levy bank to where she was found,” he told reporters on Tuesday.

“She was right on the edge of the water.”

A post-mortem examination is yet to be carried out.