A report released today investigating how states share water in the Murray Darling Basin describes a fascinating contrast between state cultures – in particular, risk-averse South Australia and buccaneering New South Wales.

Perhaps surprising is the report’s sparse discussion of the Murray Darling Basin Plan, which has been the focus of irrigators’ anger and denunciation by National Party leaders: Deputy Prime Minister Michael McCormack and NSW Deputy Premier John Barilaro.

In general terms, the Murray Darling Basin Plan was originally intended to make water management in the Murray Darling Basin more environmentally sustainable. Its critics see it as a restraint on development, and complain it has taken water away from irrigators during a time of extreme drought.

In response to McCormack and Barliaro’s criticisms of the plan in late 2019, federal water minister (and senior National Party figure) David Littleproud commissioned Mick Keelty as Interim Inspector General of MDB Water Resources.

For the new report, Keelty investigated the changing distribution of “inflows” – water flowing into the River Murray in the southern states.

Climate change has brought the inflow to just a trickle. This dramatic reduction over the past 20 years is what Keelty has described as “the most telling finding”.

He also investigated the reserve policies under which the three states choose – or don’t choose – to hold back water in Hume and Dartmouth Dams to manage future droughts.

Keelty says there’s little transparency or clarity about how much water states are allocated under the Murray Darling Basin Agreement (the arrangement for sharing water between the states which underpins the Basin Plan). This failure in communication and leadership across such a vital system must change.

Read the full article on The Conversation, authored by Dr Daniel Connell