Murray-Darling Declaration signatories Quentin Grafton, John Williams, and Jeff Connor provided expert reaction to the Australia Science Media Centre. To read the full list of expert reaction visit the AusSMC website.

Quentin Grafton and John Williams

"Yet again fiction appears to be triumphing over fact. The facts are these:

(1) the disallowed amendment stops proposed changes to the Basin Plan, not the other way around. That is, the Commonwealth (with the full backing of NSW and Victoria) want to reduce the volumes of water recovered in the Darling River that was in the original Basin Plan. Thus, by not allowing this amendment to pass the original intent for water recovery in the Basin is unchanged.

(2) the amendment that was disallowed claims to be based on the ‘best available science’ yet, according to the Murray-Darling Basin Authority, up to 75% of surface water extractions by irrigators in the Northern Basin are not even metered. There can be no credible science to support reductions in environmental water recovery when most of the water extracted by irrigators is not even metered.

(3) The Basin Plan was about increasing net stream flows by 2,750 billion litres per year despite the fact that the Sustainable Diversion Limits in the Basin Plan actually exceed the average annual surface water diversions in the last 1980s and early 1990s and the noughties. Thus, reducing this volume any more is contrary to key objects of the Water Act (2007), namely, “to ensure the return to environmentally sustainable levels of extraction for water resources that are over-allocated or overused”.

(4) The irrigator lobby group and the state water ministers’ objections to the disallowed amendment is all about money rather than water. The volume of water in the amendment is less than 1% of the annual average surface water diverted by irrigators in the Basin. What bothers them is that this disallowance may be the ‘thin edge of the wedge’ that will stop billions more of tax-payers dollars being wasted on efficiency and infrastructure projects that deliver virtually no public benefits, but provide very large private benefits to irrigators.

It’s time to lift open the bonnet and see what is really happening in the engine of the Basin. It’s time for a full, independent scientific and economic audit of the billions spent on water recovery, and what it has delivered. Until, and unless, such an independent scientific audit happens, no person who cares about the public interest can allow amendments that would both change the Basin Plan and reduce stream flows in the Basin."

Jeff Connor

"Threats to abandon the Murray Darling Basin Plan are supported by sentiments that set city against bush and irrigators. For example, Victoria’s Water Minister stated: ‘I've spent a lot of time in irrigation communities, they're doing it tough, they're critical to our economy, these towns are critical to Victoria.’ 
 
Actually, Parliament’s decision to allow 70 billion less litres of water diversions in the Murray Darling (since blocked in the Senate) is strongly supported by irrigators and towns downstream of Bourke. They copped the costs of changes last year, blocking water that had previously flowed down the Darling all the way to Broken Hill; and the costs of much more water extraction directly from the river at (allegedly) over licensed rates.
 
Further, some downstream households were denied what, under MDB water allocation rules, is supposed to be the highest priority water use: stock and domestic consumption. This lack of transparent deliberation isn’t fair to those who are deprived of secure water rights and leaves us uncertain: did changes really increase benefit or did downstream costs exceed the value of upstream benefit? Good public policy requires an open forensic audit process to establish who is benefiting and who is facing costs and how State and Federal implementation can improve."