The headwaters of the Langlo River rise under the Edinburgh Range near Lumeah and northwest of Augathella. The rivers flows generally in a southerly direction and forms a series of braided channels flowing through mostly uninhabited plains past Baykool and Nungil. It veers to the southeast near Lynton Hills and crosses the Diamantina Developmental Road near Meecha[1] before reaching its confluence with the Warrego River.[2] The Langlo River is joined by seventeen tributaries including the Ward River and descends 92 metres (302 ft) over its 440-kilometre (270 mi) course.[1]
The river's catchment is mostly composed of natural downs country, mostly used for grazing cattle and sheep, vegetated with Flinders and Mitchell Grass, interspersed stony ridges and red stony plains and bisected by numerous creeks. The underlying geology is Middle Cretaceous sandstone with areas of limestone and mudstone.[3]
