What is a catchment?
The catchment of a river is the area of land that rain falls on to feed that river. Every area of land on the planet is part of a catchment. As water moves over the land, it finds its way into streams and down into the soil, eventually feeding the river. Some water remains underground and this slowly recharges the river even when there is no rainfall.
Catchments range greatly in size and use, from small urban catchments such as the Cooks River in Sydney, to massive catchments spanning three states, such as the Murray Darling.
For more information on river catchments in Australia, including photos, audio, video, features and quiz see Other Resources