Resource Manager Mark Bailey said the risk of spill in the Murray and Campaspe systems remained above the 10 per cent threshold needed to make a low risk of spill declaration.
“Above average inflows to Lake Hume and Lake Eppalock during July increased the volume of water in both storages,” Dr Bailey said.
“The risk of spill has increased to 45 per cent in the Murray system and remains about 50 per cent in the Campaspe system.”
Dr Bailey said the risk of spill assessment 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,” he said.
Trading Opportunities Allocation trade from NSW to Victoria is limited to the lesser of a net annual volume of 200 gigalitres or a volume that keeps the risk of spill in Victoria’s share of both Hume and Dartmouth reservoirs below 50 per cent.
While the risk of spill from Victoria’s share of Hume and Dartmouth is approaching 50 per cent, 200Gl of allocation trade from NSW to Victoria is still possible.
The volume available for trade is updated monthly with each risk of spill announcement.
The risk of spill in the Murray and Campaspe systems in 2026-27 will be updated on Thursday, September 10.
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