Water minister Tony Burke finalised the management plan for the ailing river system on Thursday.
It will return 2750 gigalitres of surface water to the environment each year and give state governments a mechanism to improve environmental, social or economic outcomes in basin areas in their territories.
But the Greens say the plan won't give the Murray-Darling, which has suffered from water shortages, the help needs and doesn't take into account the impact of climate change.
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"It is extremely disappointing to see the Labor government working to deliver a plan that satisfies (Nationals senator) Barnaby Joyce and his big irrigator friends," Greens water
spokeswoman Sarah Hanson-Young told reporters in Canberra.
"This plan is not better than nothing because it hasn't done what it's meant to do, which is to set up the system to be resilient in the drier years."
The Greens want to disallow the plan after it's tabled in parliament next week and "send it back to the minister to get it right".
"This is an opportunity for the minister to work with the Greens to ensure that we actually save the river from environmental collapse," Senator Hanson-Young said.
The Greens will also seek to amend the Water Act to say any plan for the basin must be stronger.
