The Diamantina River is a major river in Central West Queensland and the far north of South Australia.
The river was named by William Landsborough in 1866 for Lady Diamantina Bowen (née Roma), wife of Sir George Bowen, the first Governor of Queensland. It has three major tributaries the Western River, Mayne River and Farrars Creek.
Rising north-west of Longreach in the Swords Range in Queensland, the river flows in a south-westerly direction through central Queensland and the Channel Country to form the Warburton River at its confluence with the Georgina River. In extremely wet years, the Warburton River flows as far as Lake Eyre.The length of the Diamantina River is approximately 900 km, and the basin is approximately 157,000 square kilometres, of which 140,000 square kilometres are used for agriculture.
