The Resource Manager for northern Victoria today announced an update of 2025/26 seasonal determinations.
The Murray system seasonal determination increases from 53 per cent of high-reliability water shares (HRWS) to 60 per cent HRWS. The Goulburn and Loddon systems increase from 39 per cent HRWS to 44 per cent HRWS.
The Broken system increases from 0 per cent HRWS to 12 per cent HRWS.
The Campaspe system remains at 100 per cent HRWS. The Bullarook system is unchanged at 0 per cent HRWS.
Resource Manager Mark Bailey said recent rainfall provided additional resources to allocate.
“Rainfall across all the catchment areas since the last assessment has increased flows into the storages,” Dr Bailey said.
“The Broken system has received its first allocation for the season, and the seasonal determinations in the Murray, Goulburn and Loddon systems continue to grow.
“There was not enough improvement in the Bullarook system to secure the operating requirements. More rainfall and flows are needed over the coming weeks to close the gap to a seasonal determination.”
The seasonal determinations for northern Victorian water systems on Monday 1 September are:
| Murray |
60% |
0% |
| Broken |
12% |
0% |
| Goulburn |
44% |
0% |
| Campaspe |
100% |
0% |
| Loddon |
44% |
0% |
| Bullarook |
0% |
0% |
Trading opportunities
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 in Victoria’s share of both Hume and Dartmouth reservoirs below 50 per cent. The current risk of spill from Victoria’s share of Hume and Dartmouth allows 200 GL of allocation trade from New South Wales to Victoria. The volume available for trade is updated monthly with each risk of spill announcement
Upcoming Resource Manager announcements
- The risk of spill in the Murray and Campaspe systems will be updated on Wednesday, 10 September 2025.
- The next 2025/26 seasonal determination announcement will be released on Monday, 15 September 2025.