10 August 2022 - 2022/23 Risk of Spill update for Murray, Goulburn and Campaspe systems
The Resource Manager for northern Victoria today announced updated 2022/23 risk of spill information for each of the Murray, Goulburn and Campaspe systems.
Resource Manager Dr Mark Bailey said ongoing releases to manage storage levels at Lake Hume led this month’s update.
“Releases from Lake Hume to control the storage volume occurred throughout July and have continued into August,” Dr Bailey said.
“These releases will cause deductions from Murray rules‑based entitlements initially and then from spillable water accounts.
“The impact on the spillable water accounts will be described in the August 15 seasonal determination announcement,” Dr Bailey said.
“The risk of spill has reduced in the Goulburn and Campaspe systems after both catchments recorded below-average rainfall and storage inflows during July,” Dr Bailey said.
“The risk of spill from Lake Eildon in the Goulburn system is about 65 per cent and the risk of spill from Lake Eppalock in the Campaspe system is about 15 per cent.”
Dr Bailey said the assessments did not describe the chances of flooding this season. “The risk of spill is a water accounting assessment. It does not refer to flood risks downstream of the storages.”
Allocation trade from New South Wales to Victoria is limited to the lesser of a net annual volume of 200 GL or a volume that keeps the risk of spill from Victoria’s share of both Lake Hume and Dartmouth Reservoir below 50 per cent.
Presently, allocation trade from New South Wales to Victoria is not possible because Victoria’s shares of Lake Hume and Dartmouth Reservoir are full.
The opportunity for allocation trade is updated with each risk of spill announcement. Customers can learn more about trade opportunities and a trial of improved trade adjustment methods on the Victorian Water Register website Victorian Water Register website.
Next announcement on risk of spill
The risk of spill in the Murray, Goulburn and Campaspe systems in 2022/23 will be updated on Monday September 12, 2022.
For information about the Resource Manager for northern Victorian regulated water systems, including seasonal determinations and resource availability, please visit www.nvrm.net.au.
Refer to the MDBA website for Victoria’s share of Murray storages.