Seasonal determination increases for the Murray, Goulburn, Loddon and Broken systems

The Resource Manager for northern Victoria today announced an update of 2025/26 seasonal determinations.

The Murray system seasonal determination increases from 80 per cent of high-reliability water shares (HRWS) to 90 per cent HRWS. The Goulburn and Loddon systems increase from 51 per cent HRWS to 54 per cent HRWS.

The Broken system increases from 22 per cent HRWS to 27 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 flows into most of the major storages were above estimates.

“Generally, the flows into the storages were a little higher than our conservative forecasts,” Dr Bailey said.

“These better than expected flows added more water into the allocation pools. However, there was very little improvement in the Bullarook system. More rainfall and flows are needed to close the gap to a seasonal determination in the system.

“As we are approaching the time of year when flows into the storages tend to reduce, the extent of water availability for 2025/26 is starting to take shape. Without rain and improved storage volumes, we face the potential of limited reserves for system operating requirements and seasonal determinations in 2026/27 in some systems.

“Entitlement holders are encouraged to begin planning for 2026/27, particularly if lower inflows continue into the next water year.”

The seasonal determinations for northern Victorian water systems on Wednesday 15 October are:

Trading opportunities

The next Goulburn to Murray trade opening is scheduled for Wednesday 15 October 2025. More details are available on the  Water Register website..

Upcoming Resource Manager announcements

• The next 2025/26 seasonal determination announcement will be released on Monday 3 November 2025.