A catchment is an area of land surrounded by natural features such as hills, where water flows to a common low point, such as a creek, lake, river or bay.
The Wolston and Centenary catchments consists of Wolston Creek and various sub-catchments in the Centenary suburbs which feed directly into the Brisbane River. Together, these catchments are 66 square kilometres in size and are located within Brisbane, Ipswich and Logan City Council local government areas.
The Wolston Catchment area is 44 square kilometres. Wolston Creek forms the downstream part of the catchment which flows into the Brisbane River. Feeding into Wolston Creek at Sumner Park are its two tributaries, Bullockhead Creek and Sandy Creek, which have their respective sources in the Greenbank Military Training Area 11 kilometres to the south. Much of the vegetation found in this area has been classified as Endangered Regional Ecosystems. This classification means that the plant species and the soil type in the bushland reserves are rare and significant.
The Centenary Catchments have a combined area of 22 square kilometres and consists of two main creeks, Mount Ommaney Creek and Jindalee Creek. There are several other minor, unnamed creeks and sub-catchments, which flow separately into the Brisbane River. This area is highly urbanised, mainly residential but with natural bushland reserves along the Brisbane River, creeks and other locations.
The catchments include all or part of the following suburbs: