Warrego River

The Warrego River is located in the Orana area of New South Wales, south of Queensland. It is the northernmost tributary of the Darling River. The river begins in the Carnarvon Range behind Mount Ka Ka Mundi and runs south, eventually joining the Darling River downstream of Bourke.

This river has 37 tributaries and goes through many reservoirs, including the Boera Dam, Turtle Waterhole, Six Mile Dam, Lower Lila Dam, Ten Mile Waterhole, and Dillalah Waterhole. Cunnamulla, Wyandra, Charleville, and Augathella are among the communities that line the river's banks.

The majority of the Warrego basin is too dry for cultivation, with rainfall ranging from 350 to 500 mm (14 and 20 in). On more fertile clay soils, it is covered with grassland, while on less fertile red earths, it is covered with saltbush shrubland. The river's flow is far too variable to allow irrigated agriculture, therefore low-intensity grazing of sheep and cattle is the most common land use. The Warrego is primarily an ephemeral stream: years might go by without any flow in the basin, and significant volumes of water only reach the Darling River during rainy years, which are usually invariably related with La Nia occurrences.

The river forms a succession of outflowing streams and anabranches below Wyandra. The Widgeegoara, Kudnapper, and Noorama Creeks all enable water to flow into Nebine Creek, a tributary of the Culgoa River, during floods. Cuttaburra Creek runs via channels, floodways, and wetlands to join the Warrego River with the Paroo River. The Irrara Creek anabranch empties into Kerribree Creek, which travels through many wetlands before emptying into Utah Lake.

State: Queensland/New South Wales

Length: 1,380 km