Average annual rainfall for the Australian continent based on a standard 30-year climatology (1961-1990). Source: Bureau of Meteorology - see http://www.bom.gov.au/jsp/ncc/climate_averages/rainfall/index.jsp
Map prepared by the Department of Environment and Energy in order to produce Figure WAT2 in the Inland Waters theme of the 2016 State of the Environment Report, available at http://www.soe.environment.gov.au
The map service can be viewed at http://soe.terria.io/#share=s-ruqkk2hcl1aejMkbavYvrDSH1T7
Downloadable data also available below.