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This past summer brings to life what living with our increasingly variable climate means for the average Australian – Phillip Glyde, Chief Executive, Murray–Darling Basin Authority

The Murray–Darling Basin Authority held its first meeting for 2020 in Canberra on 11-12 February. In the wake of devastating fires, drought and flooding the Authority acknowledged the hardship many communities have experienced this summer and the difficult road to recovery ahead.

This report represents a synthesis of the current available information relating to observed trends and historical conditions across the Murray–Darling Basin. Trends reported in this report represent natural – or unmanaged – conditions arising from changes in the climate system.

In 2007–2008 CSIRO Murray-Darling Basin Sustainable Yields (MDBSY) project published a series of reports documenting water availability across the Murray-Darling Basin, including an assessment of the likely impacts of climate change to ~2030 on water availability (e.g. CSIRO 2008a).

The purpose of this report is to provide the Murray–Darling Basin Authority advice on defining climate scenarios for use in the MDBA modelling to guide development of the first Basin Plan.