It is sensible to consider water issues by catchment or sets of catchments, so that the health of entire systems can be assessed. Australia's 12 drainage divisions are the top level of our catchments (Figure 4.1).

How many catchments does Australia have?

The data includes the name and number of each of the 245 basins, 77 regions, and 12 divisions.

Is Australia water rich or poor?

Australia is also the driest continent inhabited by humans, with very limited freshwater sources. Despite the lack of freshwater, Australians use the most water per capita globally, using 100,000L of freshwater per person every year.