Background
The plaintiffs, irrigated agricultural businesses near the upper Murray River and individual farmers associated with them, brought representative proceedings against the Murray-Darling Basin Authority. They alleged that the Authority’s operation of the river system during the 2017–2018 and 2018–2019 water years caused water to be lost through overbank transfers into the Barmah-Millewa Forest, reducing water allocations and causing irrigators economic loss.
The claims challenged operational decisions concerning releases from Yarrawonga Weir, use of water from the Menindee Lakes and the Goulburn inter-valley trade account, forecasting and modelling, and the timing of transfers. The plaintiffs also alleged negligence in negotiations concerning access to privately owned Murrumbidgee Irrigation Limited infrastructure.
The Court held that the alleged tort was committed in the Australian Capital Territory, where the Authority performed its work and made the relevant operational decisions. ACT substantive negligence law applied through s 64 of the Judiciary Act 1903 (Cth), while the NSW rule governing certain causation evidence applied procedurally through s 79.
The Court’s Holding
Faulkner J held that the Authority did not owe the plaintiffs or represented irrigators the alleged duty to avoid pure economic loss. The statutory scheme required the Authority to operate the Murray River in the public interest, execute intergovernmental water-sharing arrangements, and manage competing State and stakeholder interests. A private-law duty focused on particular irrigators would be incongruous with that framework. The Authority had not assumed responsibility to the plaintiffs, and the salient features of the relationship did not justify imposing the novel duty.
The Court further held that, even assuming such a duty existed, the plaintiffs did not establish breach. The challenged river operations, modelling choices, timing decisions, and infrastructure negotiations were not shown to fall below the standard of reasonable care. Some allegations were outside the pleaded case or impermissibly depended on hindsight.
The plaintiffs also failed on factual causation. Their proposed counterfactual river operations did not adequately establish that reasonable care would have produced higher allocations or compensable savings, and the claimed lost opportunity was not proved to have substantial value. The Court dismissed the representative proceedings and ordered the plaintiffs to pay the Authority’s costs, subject to liberty to seek a different or further costs order within 21 days.
Key Takeaways
- A statutory authority responsible for balancing public and intergovernmental interests will not necessarily owe private stakeholders a duty to prevent pure economic loss, even when such loss is foreseeable.
- The Water Act framework did not create a sufficiently close relationship between the Basin Authority and individual irrigators, and the alleged duty would have conflicted with the Authority’s broader statutory responsibilities.
- The claims independently failed because the plaintiffs did not prove unreasonable river operations or a sufficiently supported counterfactual connecting the alleged negligence to their losses.
Why It Matters
The decision limits the circumstances in which irrigators may recover economic losses from the Murray-Darling Basin Authority for river-management decisions. It emphasizes that negligence duties must be compatible with the statutory scheme governing a public authority, particularly where that authority must reconcile competing interests across several jurisdictions.
The judgment also illustrates the evidentiary demands of complex resource-management litigation. Plaintiffs must identify a coherent, technically supported counterfactual and prove that reasonable alternative operations would probably have improved their position; criticism of decisions with the benefit of hindsight is insufficient.