RESOURCES

climate change impacts​_

Recycling, reuse, repair and regenerative design.

Home | Resources | 

 | 

The Murray-Darling Basin: A watershed moment for Australia’s greatest river system
Murray Darling River and Gum trees

The Murray-Darling Basin: A watershed moment for Australia’s greatest river system

The Murray-Darling Basin: A watershed moment for Australia’s greatest river system

Craig Wilkins, Co-Director, Murray Darling Conservation Alliance

Key takeaways

  • This is a critical year for the Murray-Darling Basin, Australia’s largest river system, and ecological, agricultural and cultural asset.
  • The Basin is experiencing severe stress and degradation from over-allocation, weak enforcement, and low public awareness, with critical wetland ecosystems receiving insufficient water, with parts of the river system facing risk of collapse.
  • The Basin Plan is under review and needs to be strengthened through four priorities – climate adaptation, river connectivity, removal of constraints to environmental flows and grater First Nations involvement.
  • The Murray-Darling Conservation Alliance is calling for urgent advocacy, enforceable protections, stronger water recovery and broad use of the Alliance’s conservation resources to raise awareness.
Murray Darling River and Gum trees

Craig Wilkins is Co-Director of the Murray Darling Conservation Alliance and has spent much of his career working to improve outcomes for nature and the environment. At this Professionals for Climate session, Craig explained some of the complexities of the Murray Darling water system and how we are at a critical juncture where there is an opportunity to improve water management. 

Why the Murray-Darling Basin matters 

The Murray-Darling Basin is Australia’s largest water resource, covering 14% of Australia spanning more than 1 million square kilometres from Queensland to South Australia. It supports more than 2 million Australians, underpins over $30 billion a year in agricultural production, and spans the lands of more than 40 First Nations groups.

Map of the Murray Darling River System

The Basin in crisis

Water over-allocation since European colonisation has reduced river flows, damaged native vegetation, and accelerated environmental degradation. The Water Act created the national framework for Basin management, and the Basin Plan later sought to restore 3,200 gigalitres of water to the environment, still below the scientific recommendation of at least 6,000 gigalitres. To date, approximately 2,100 gigalitres has been recovered, while less than 5% of wetlands receive the water needed to maintain a healthy ecosystem.

The Murray-Darling Conservation Alliance works with irrigators, First Nations communities, and other stakeholders through initiatives such as the River Fellows Program to build advocacy and tell practical stories about the river’s importance. The Alliance warns that the lower reaches of the river were declared critically endangered in January, signalling a 50% chance of collapse within the next decade and escalating the risk to wildlife already dependent on a stressed system. 

We are in a critical window to strengthen the Basin Plan, restore flows, improve floodplain and wetland health, and align river management with climate resilience, water justice, and biodiversity protection.

Barriers to effective Murray-Darling Basin management

Four barriers continue to limit effective Murray-Darling Basin management:

  • Entrenched interests: Competing demands for water, particularly from irrigators, continue to reinforce historic allocations even where the system is over-allocated.
  • Poor rules and enforcement: Weak laws and oversight, particularly in New South Wales, allow practices such as unmetered pumping and insufficient protection for first-flush flows after rain events.
  • Low public awareness: Around 40% of Basin residents are unaware they live within the Murray-Darling Basin, limiting the community mandate for reform.
  • Floodplain harvesting: Large Northern Basin dams capture significant water before it reaches the Darling River, contributing to mass fish kills, poor water quality, and blue-green algae.
River levels and their impact on the river systems including flood plain harvesting

The 4 Cs — Climate, Connectivity, Constraints and Culture 

The Murray-Darling Conservation Alliance believes the Basin Plan review should prioritise four connected reforms:

  1. Climate: Incorporate climate change modelling and adaptation strategies, recognising that reduced rainfall can drive disproportionately larger runoff losses and that freshwater systems are natural climate stabilisers.
  2. Connectivity: Maintain continuous base flows so water can move through the Basin rather than being intercepted upstream before it reaches stressed downstream ecosystems.
  3. Constraints: Remove physical and legal barriers that prevent environmental water from reaching wetlands and floodplains and restoring natural river rhythms.
  4. Culture and water justice: Increase First Nations water allocation and decision-making roles, drawing on proven land and river management knowledge built over millennia.

What you can do now

  • Write to your state or federal representative before the Basin Plan review milestones and ask them to support stronger water recovery, enforceable environmental flows, and better protection for first-flush events.
 
Craig Wilkins co-director Murray-Darling Conservation Alliance

About the speaker

Craig Wilkins is the National Co-Director of the Murray-Darling Conservation Alliance and has a lifelong connection with the river. The Murray-Darling Conservation Alliance is a coalition of four state-based conservation councils advocating for stronger environmental outcomes across the Murray-Darling Basin.

Interested in more climate conversations?

Join Professionals Advocating for Climate Action to hear from leading experts and connect with professionals driving the transition to a more sustainable future.

Share:

OTHER TOPICS YOU MAY LIKE

Related areas

Many stories sit across more than one theme. This content will give you a wider view.

business solutions

innovation

Use your influence to do more

Join a growing network of professionals turning concerns into action. Share what you know and bring climate thinking into the work you already do.

Use your influence to do more

Join a growing network of professionals turning concerns into action. Share what you know and bring climate thinking into the work you already do.

OTHER TOPICS YOU MAY LIKE

Related areas

Many stories sit across more than one theme. This content will give you a wider view.

business solutions

innovation

Scroll to Top