Gwydir River

The Gwydir River is a large inland river in the northern part of the Australian state of New South Wales which is part of the Murray-Darling Basin. The river has two main tributaries—the Horton River and the Rocky River. 'Gwydir' is pronounced to rhyme with 'wider', and not as the Welsh might pronounce it.

The Copeton Dam on the Gwydir River stores water for towns, stock, domestic use and irrigation. The Gwydir River below Copeton dam, provides some of the wildest whitewater rafting available in Australia. Before the construction of Copeton Dam and much diversionary work, the Gwydir River flowed into the Gingham and Lower Gwydir Wetlands. The Gwydir Highway was named after the river.