The Broken system has joined the Goulburn, Campaspe, Murray and Loddon systems on 100 per cent HRWS. Bullarook is the only system still on zero HRWS.
Northern Victoria resource manager Mark Bailey updated the 2024-25 seasonal determinations on Monday, with the Broken system jumping from 47 per cent to 100 per cent HRWS.
In the Campaspe system, the low-reliability water share increased from 41 per cent to 44 per cent LRWS. No other systems have LRWS allocations.
Dr Bailey said wetter conditions enabled seasonal determinations to increase and carryover rules influenced the large improvement in the Broken system.
“Entitlement holders in the Broken system carried over the equivalent of a 38 per cent seasonal determination of high-reliability water shares into 2024-25,” he said.
“As the maximum volume entitlement holders can receive through new season allocations and carryover is 100 per cent of their high-reliability water shares, the resource improvement needed to reach 100 per cent of high-reliability water shares from the most recent announcement was relatively low.
“This was achieved with inflows into Lake Nillahcootie from recent rainfall and higher flows in the tributaries downstream of the storage.
“The improvements in the Campaspe system came from rainfall in the Lake Eppalock catchment.
“In the Bullarook system, almost all the system operating water has been secured. Additional resource improvements will contribute to seasonal determinations. Customers with carryover allocation are able to access that water when needed.”
Trading opportunities
Allocation trade from NSW to Victoria is limited to the lesser of a net annual volume of 200 Gl or a volume that keeps the risk of spill in Victoria’s share of both Hume and Dartmouth reservoirs below 50 per cent.
The current risk of spill in the Murray system allows 200 Gl of net trade from NSW to Victoria.
The next 2024-25 seasonal determination announcement will be released on Monday, December 16.
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