The Condamine River drains the northern portion of the Darling Downs, an area of sub-coastal southern Queensland. It rises on Mount Superbus, on the inland side of the Great Dividing Range and although only about 100 km from the Queensland coast, the Condamine flows north, then west. About 50 km south of Roma it turns to the south-west and becomes known as the Balonne River. It then joins with the Barwon River and becomes known as the Darling, Australia's longest river, which flows more than 3000 kilometres south-westward to reach the sea near Adelaide in South Australia.
The study area encompasses the CondamineRiver and its tributaries, upstream of the confluence with Myall Creek (south west of Dalby).
Tributaries of the CondamineRiver flow through relatively narrow valleys at the headwaters, with a gradual broadening to wide alluvial plains near the CondamineRiver.
The CondamineRiver catchment is part of the Murray-Darling Basin, which extends across four states.
The CondamineRiver catchment to Warwick ALERT flood warning system was completed in the mid 1990's as a co-operative project between the Bureau of Meteorology and the then Warwick City Council.
Historical flood heights for all river stations in the CondamineRiver catchment to Warwick as shown on the map, are available from the Bureau of Meteorology upon request.
At each flood warning river height station, the severity of flooding is described as minor, moderate or major according to the effects caused in the local area or in nearby downstream areas.