Outlook for the 2025/26 season

Outlook for the 2025/26 Season

The outlooks for 2025/26 seasonal determinations are based on historical flow records that have been adjusted to match climate conditions observed since 1975. The outlook scenarios presented are:

• Wet                 Inflow volumes to major storages that are greater in 10 years out of 100
• Average          Inflow volumes to major storages that are greater in 50 years out of 100
• Dry                  Inflow volumes to major storages that are greater in 90 years out of 100
• Extreme Dry   Inflow volumes to major storages that are greater in 99 years out of 100

The following tables summarise possible high-reliability water share seasonal determinations through the season and include a reference year to help users recognise the possible inflow conditions.

Murray System Outlook for Seasonal Determination of High-Reliability Water Shares

Goulburn and Loddon System Outlook for Seasonal Determination of High-Reliability Water Shares

Broken System Outlook for Seasonal Determination of High-Reliability Water Shares

Bullarook System Outlook for Seasonal Determination of High-Reliability Water Shares

Seasonal determinations under additional scenarios for each system are available from the Additional Scenarios webpage. 

Upcoming Resource Manager Announcements

• The next 2025/26 seasonal determination announcement will be released on Wednesday, 1 October 2025.
• The risk of spill in the Murray and Campaspe systems will be updated on Friday, 10 October 2025.