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Some of our 2023 graduate program cohort found surprises on a recent tour of the Sunraysia region’s salt interception schemes.

Basin in Brief provides a monthly summary of climate, rainfall, inflows and water quality information. This page was updated 13 April 2023.

The River Murray Water Quality Monitoring Program has captured physical and chemical data from 28 River Murray and tributary sites since 1978. This report examines long-term trends in water quality and drivers of change.

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.

Blue-green algae occur naturally in rivers, lakes and dams. Under certain conditions, blue-green algae multiply quickly, creating an ‘algal bloom’ that can decrease water quality.

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

Acid sulfate soils can pose a serious risk to the health of the plants, animals and communities of the Murray–Darling Basin especially during high risk periods such as droughts under low flows and water levels.

Salinity is the concentration of salt in the water or soil. Managing salinity is one of the biggest challenges in the Murray–Darling Basin.

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.