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To understand how fish are counted in fishways, first it is important to understand why we want to count these fish in the first place.

Since 1922, when the first weir was constructed, there have been efforts to help fish move through the waterways. Our timeline shows the progress of the fishway infrastructure.

Fishways are important for the passage of fish through barriers such as weirs, to allow them to migrate up and down a river. There are many fishways along the River Murray. Learn about how they work, their types, locations, history and fish movement.

In 2019, the MDBA undertook a detailed survey of the River Murray channel through the Barmah–Millewa Reach. This revealed the presence of a very large quantity of sand on the bed of the river, something that was not expected. Since then, several further studies have been undertaken to investigate the extent and source of the sand, the rate that it is moving at and options to manage it. Reports of these studies are provided below.

The Chowilla Floodplain was inundated in late 2022 – monitoring shows the ecosystem is now thriving.

The Murray–Darling Basin Authority has offices and staff scattered throughout the Basin, giving our team a front row seat to community activities and Basin operations. Check out some of the recent photos our staff have snapped across the Basin.

Ongoing fish monitoring in the Barmah–Millewa Forest is used to monitor the health of the waterways.

The Murray–Darling Basin Authority has offices and staff scattered throughout the Basin, giving our team a front row seat to community activities and Basin operations. Check out some of the recent photos our staff have snapped across the Basin.

We recently took part in a collaborative project with the Australian River Restoration Centre to produce the second edition of 'Fishes of the Murray–Darling Basin'

Each year we release an Annual Operating Outlook for the River Murray. It explains how we may operate the River Murray system across a range of possible climatic and rainfall scenarios.