The Mehi River is a perennial watercourse that is part of the Barwon catchment within the Murray–Darling basin, located in the Orana district of New South Wales, Australia.

The area adjoining the river has numerous attractive riverside parks, golf links and reserves.

The Mehi River jetty at Moree is a popular spot for water sports.

[4] Native fish that are found in the Gwydir-Mehi river system include bony bream, Murray cod, spangled perch, golden perch, which are often known as yellowbelly and eel-tailed catfish.

Some areas remained underwater for days, and in some cases, as long as a couple of weeks costing farmers thousands of dollars in ruined crops.