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This is a review of the hydrological models that underpin the Barwon-Darling Watercourse water resource plan that was submitted to the Murray–Darling Basin Authority in June 2020. The 2 most important of these models were the Baseline Diversion Limit model and the Annual Permitted Take model. This review was prepared to assist the Murray–Darling Basin Authority in their appraisal of the Barwon-Darling Watercourse water resource plan prior to its accreditation and implementation under the Basin Plan.

The calculation of state shares includes the shares (volumes) that each state holds in MDBA storage at the end of the month. Find the current and historic data.

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.

Along with our river management partners, we use a variety of models to support the planning and running of the Murray–Darling Basin’s rivers.

Flows in the River Murray system vary widely depending on a range of factors, including rainfall, inflows, evaporation and demand for water. We summarise this information each month in the below reports. This page is an archive of reports for previous months.

The Murray–Darling Basin Authority (MDBA) operates the River Murray to share water between New South Wales, Victoria and South Australia, as required under the Murray–Darling Basin Agreement. To undertake this work the MDBA has built, maintained and operated a hydrological model of the River Murray.

The Australian Government is working with the New South Wales and Queensland governments to implement a suite of water management tools – the Northern Basin Toolkit.

Water delivery shortfalls are rare but occur when available water cannot be delivered to users when they want it. For example, it could happen because demand exceeds the physical capacity of rivers and channels to carry the water, or when demands for water unexpectedly spike and there's not enough time to release additional water from dams to meet the demand.

Water in the River Murray system is shared between New South Wales, Victoria and South Australia.

The Murray–Darling Basin has a highly variable climate, with conditions differing each year and across regions. Planning for wet and dry conditions is a major challenge for river operators, water resource managers and the community.