New South Wales has pledged to walk away from the Murray-Darling Basin Plan, while Victoria's water minister has declared the plan 'over'.
A dozen leading researchers have issued an urgent call to action for the Murray-Darling Basin, arguing that the billions spent on water-efficient irrigation have done little for the rivers' health.
Low flows in the Murray River in recent years have harmed tiny marine plants called phytoplankton, with consequences for local marine species and management.
SA Premier Jay Weatherill has announced a Royal Commission into breaches of the Murray Darling Basin agreement. But will it solve the long running problems with river management?
There are local, practical implications linked to failed advancement of infrastructure projects that rely on expertise in space. Protecting Australia's water is just one example.
Allegations of water theft have thrown the Murray-Darling Basin Plan into crisis. The solution could involve users declaring their annual water use, subject to random audits - like a tax return.
A recent report argues more water is needed to resurrect the Murray-Darling Basin. But simply increasing river flow alone could actually harm the Basin.
Millions of dead carp will fill the Murray-Darling Basin after the government releases a targeted virus. Scavengers like turtles and crayfish might help – as long as we protect them.
The market for water entitlements is worth tens of billions, encouraging investors to raise funds and get involved. But the data shows they aren't having a big impact on prices.
Tempers have flared once again over the long-term plan to return water to the Murray-Darling River and improve its health.
Malcolm Turnbull has promised key crossbencher Nick Xenophon closer monitoring of the Murray-Darling Basin Plan.
Malcolm Turnbull has assumed responsibility personally for negotiating with key crossbencher Nick Xenophon over water.
Earlier this week, footage aired of George Brandis speculating that Queensland's Liberal National Party might demerge. But Barnaby Joyce says this won't happen.
Freshwater fish are declining everywhere, in part thanks to dam-building. But we can have both.
Efforts to combat water pollution on the Great Barrier Reef aren't working, according to a new government report.
Toxic algal blooms were unheard of in Australia's major waterways before 1991. Now the Murray River has been struck by four major events in less than a decade, with more likely in the future.
For the Barkindji people, the Darling River has been a symbol of Aboriginal survival since colonial times. Now, the once busy NSW town of Wilcannia is in danger of losing its water.
It's full steam ahead for bringing vast increases in farming to northern Australia. In fact, probably too fast to adequately consider the environmental impacts.
As El Nino looms, the Murray-Darling is facing another drought. But after almost a decade of investment in water trading and other policies, its prospects are better this time around.
University of Canberra Professorial Fellow Michelle Grattan and and Deputy Vice-Chancellor (Research) Frances Shannon discuss the week in politics.