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The most common cause of mass fish deaths is low levels of oxygen in the water. But fish deaths can also happen for other reasons, sometimes we don’t know why.

Water for the environment is used to improve native fish populations, including threatened species. Find out about the priorities for 2023.

We have established job-specific registers for applicants who are interested in non-ongoing (temporary) vacancies.

Water quality issues have increased as flood waters bring nutrient loads into rivers.

The MDBA website will be easier to navigate following a major upgrade, due for launch in early 2023.

Our legal expenditures back to the financial year 2018–19.

With most of the Murray–Darling Basin currently experiencing higher than average river flows, we're exploring the benefits of connected waterways.

A heartfelt NAIDOC Week message from our regional engagement officer and Ngemba/Murrawarri man, Phil Sullivan.

A mass fish death is when many fish die suddenly and unexpectedly. It is more likely to happen in times of flood or drought.

The Lower Darling was subject to tragic fish death events in December 2018 and January 2019. The large fish death events covered a 40 kilometre stretch of the Darling River, downstream of Menindee Lakes.