The Resource Manager for northern Victoria today announced an update of 2025/26 seasonal determinations.
The Murray system seasonal determination increases from 49 per cent of high-reliability water shares (HRWS) to 53 per cent HRWS. The Goulburn and Loddon systems increase from 38 per cent HRWS to 39 per cent HRWS.
The Campaspe system remains at 100 per cent HRWS. The Broken and Bullarook systems both remain unchanged at 0 per cent HRWS.
Resource Manager Mark Bailey said there had been limited flows into the storages in recent weeks.
“Flows into the storage have been close to our estimates in the absence of any significant rainfall since the last assessment,” Dr Bailey said. “Additional flows into the Menindee Lakes contributed to the increase in the Murray system.
“All operating requirements in the Broken system are now fully established for the season. Further resource improvements will contribute to seasonal determinations.
“More rainfall is needed in the Bullarook system over the coming weeks to secure the system’s operating requirements and increase seasonal determinations.”
The seasonal determinations for northern Victorian water systems on Friday 15 August are:
| Murray |
53% |
0% |
| Broken |
0% |
0% |
| Goulburn |
39% |
0% |
| Campaspe |
100% |
0% |
| Loddon |
39% |
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 next 2025/26 seasonal determination announcement will be released on Monday, 1 September 2025.
- The risk of spill in the Murray and Campaspe systems will be updated on Wednesday, 10 September 2025.