Immediate changes are needed to avoid the "collapse" of Australia's longest river system, with a government agency finding over-extraction brought forward drought conditions for parts of the river by three years.
In a highly critical draft review of the 2012 water sharing plan for the Barwon-Darling, released on Wednesday, the NSW Natural Resources Commission found the riverine ecosystem to be "in crisis".
Some aquatic species "will take decades to recover, if they recover at all", it said, blaming in part changes that allowed irrigators greater extraction rights. Cotton alone used about 1 trillion litres in the five years to 2015-16.
The longest river system in Australia is on course for "collapse", the NSW's Natural Resources Commissioner warns in a new report. Credit: Janie Barrett |
The commission makes 17 recommendations aimed at promoting three stages of reform. The first priority, though, should be for "an open, evidence based, and independently peer reviewed process to develop a new plan".
The report comes at a time when most of NSW and other parts of the Murray-Darling Basin are facing an intensification of drought with little immediate relief predicted in coming months at least.
Many towns are facing tight water restrictions, important wetlands are drying out and many farmers are facing limited, if any, water allocations for the current year. Residents of Menindee on the lower Darling fear a return of mass fish kills this summer.
'Scathing' report
Several mass fish kills in the Darling River at Menindee illustrated the plight of the river during the past summer. Credit: Nick Moir |
The NSW Department of Planning, Industry and Environment should then remake the plan by July 1, 2023, when the current one expires, and it should also review upstream water sharing plans that affect the Barwon-Darling, it said.
Kate Smolski, chief executive of the NSW Nature Conservation Council, said it was a "scathing report which places the blame for the ecological catastrophe we have seen unfold in the Darling squarely at the feet of the NSW government for allowing over extraction by upstream irrigators".
"The report also highlights the devastating effect that climate change will have on water availability in the catchment," Ms Smolski said. "It is clear that a comprehensive review of climate change impacts on water availability across the entire Murray-Darling Basin is needed."
A commission spokesman said climate change "was not effectively addressed" in the 2012 plan.
"Latest CSIRO best estimates of climate change show that while rainfall predictions are highly uncertain temperatures will increase and evaporation rates will increase," he said.
"In-flows to the Barwon-Darling are likely to decline in the future, resulting in a 10 per cent reduction in end-of-system flows by 2030."
A cotton farm near Bourke on the Barwon-Darling in north-west NSW endures dry times. Credit: Kate Geraghty |
Jodi McKay, NSW Labor leader, told reporters the handling of the Barwon-Darling was "near-criminal", and said the report was a "significant indictment of the management of water by the National Party in this state".
"We've always said National Party ministers shouldn't be in charge of water", Ms McKay said.
A spokeswoman for Melinda Pavey, the water minister, said the government would review the draft and respond to its recommendations when the report is finalised in September.
"The government has embarked on significant water reform over the past 12 months as was recognised by the NRC in the report," she said.
‘Water is critical to everyone in our western NSW communities and their feedback on the draft report will be integral to how we respond to the recommendations."
Ms Pavey's predecessor, Niall Blair, said "at no time during my time as water minister, did I shy away from the hard decisions".
He cited his move to bring forward the review of the plan by several years, the greater protection of environmental water, and the establishment of the Natural Resources Access Regulator as examples of those measures.
Roy Butler, the Shooters, Fishers and Farmers Party member who won the seat of Barwon during the March state election, said the existing plan may have a 40 billion litre a year hole in terms of over-allocated water.
What's needed now was a careful overhaul of the plan "based on the best scientific evidence we can find", not "populist slogans for more dams", Mr Butler said.
Comment has been sought from Energy and Environment Minister Matt Kean and from the NSW Irrigators Council.
15. Water use in the Darling is dominated by one crop: cotton. This dominance has increased over the past decade. Almost 1 TRILLION LITRES of water from the Darling River was used for cotton between 2010/11 and 2015/16! pic.twitter.com/Tz01SW0AEe'Appropriate' urgency
— 💧Jack Gough (@JackEGough) July 24, 2019
Rob Vertessy, a Melbourne University hydrologist who led a federal government inquiry into the Menindee fish kills last summer, said the report was "certainly timely and infused with the appropriate sense of urgency".
Among key recommendations that matched those of his report included modifying water access arrangements to protect low flows, maintaining connectivity of the rivers and protecting environmental flow, Professor Vertessy said.
The failures of the current plan include the lack of ecological targets and a failure to allocate water in line with Native Title for the river known as the Barka to the indigenous community.
For its part, the Murray-Darling Basin Authority said it did not have powers to assess the water-sharing plan because it was made before the wider basin plan came into force.
"The MDBA welcomes the findings and looks forward to seeing the new Water Resource Plan for the Barwon-Darling give effect to these important recommendations," a spokeswoman said.
Links
- How Taxpayers Are Funding A Huge Corporate Expansion In The Murray-Darling Basin
- Four Corners: Cash Splash
- Forests flooding while rivers run dry: two tales of one river system
- Basin authority facing $750m negligence claim from Murray River irrigators
- Murray-Darling Basin Royal Commission won't look at fish kills
- Murray-Darling Basin Royal Commission slams authority for 'maladministration'
- Billions spent on Murray-Darling water infrastructure: here’s the result
- The Murray-Darling Basin scandal: economists have seen it coming for decades
- The Darling River is simply not supposed to dry out, even in drought
- We wrote the report for the minister on fish deaths in the lower Darling – here's why it could happen again
- Aboriginal voices are missing from the Murray-Darling Basin crisis
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