The Annual Operating Outlook, released last week by the Murray-Darling Basin Authority, describes potential operating strategies for managing the Murray River system across the 2024-25 water year.
MDBA river management executive director Jacqui Hickey said the outlook showed the water years has started with about 770 Gl more water in active storage at the end of July 2024 as compared to the long-term average of 6007 Gl for this time of year.
“Our operating outlooks explore a range of scenarios, from extreme dry to wet conditions, and I’m pleased to report that for the 12 months ahead we are forecasting a low chance of delivery shortfall,” Ms Hickey said.
“Under the dry scenarios, we expect a key focus of river operations over spring will be transferring water from Menindee Lakes and Hume Dam, as well as calling on inter-valley transfers to ensure Lake Victoria is in a good position ahead of summer.
“The MDBA recently begun calling water from the Menindee Lakes at low rates and if dry conditions continue, this call is expected to increase in coming months.
“These delivery strategies will enable us to meet state water orders throughout the system, particularly in peak irrigation season.
“Environmental water holders are also planning to water the Barmah-Millewa Forest from late winter to December under many inflow scenarios.
“If we get average or wetter inflows in winter and spring, we can expect to see flood operations required at Dartmouth and Hume Dams.
“Our operating outlooks provide information that helps identify system pressures that may occur so water managers and system operators can plan and manage risks to water supply.”
The MDBA will continue to monitor conditions and adjust operations as required.
An update to this outlook will be provided after the peak inflow season concludes, or earlier if conditions change.
Meanwhile, releases from Dartmouth Reservoir will be increased for the purposes of electricity generation.
The current discharge at Coleman’s Gauge of 500 ML/day or 1.2 metres gauge height will be gradually increased to 1500 Ml/day or 1.57 metres gauge height, starting at 8am on Monday, August 19.
The duration of the increased releases for electricity generation is until about 8am on Wednesday, August 21, but will be dependent upon electricity demand in the near future.
For more information, and to read the full Annual Operating Outlook report, visit the MDBA website.
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