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New research investigates how to include future environmental change in water runoff models

The Murray–Darling Basin Authority (MDBA) has today released its Constraints Relaxation Implementation Roadmap to guide governments in delivering projects that will maximise outcomes from environmental water use across the Basin.

For a long time, river modellers have faced the challenges of tracking water movement across landscapes. This task becomes more complex when different river catchments use different models. Along with jurisdictions, we are in the process of improving these systems and tools.

In the Murray–Darling Basin connectivity amounts to one single idea, continuity of river flows. Delivery across the vast territory of the Basin will involve another kind of connectivity, of government with communities.

It’s not the most exciting name, but the Constraints Relaxation Implementation Roadmap is an important body of work being developed this year by the Murray–Darling Basin Authority (MDBA).

The MDBA is partnering with states to create new river modelling roles, enhancing capability and building a deeper understanding of the Basin.

We're using the best available science and knowledge to help deliver a productive and healthy future for the interconnected rivers of the Murray–Darling Basin.

In 2012 the Basin Plan listed estimates of the average annual volumes of floodplain harvesting as components of the baseline diversion limit (BDL) in some northern Basin sustainable diversion limit (SDL) resource units. The New South Wales ‘Healthy Floodplains Project’ includes work to enable calculation of re-estimates of BDLs associated with floodplain harvesting in these northern New South Wales SDL resource units. These volumes will contribute to re-estimates of the total BDLs for all forms of take.

The Murray–Darling Basin Authority (MDBA), in collaboration with state and Commonwealth governments, is working to deliver a Constraints Relaxation Implementation Roadmap.

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.