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
| Wet |
2021/22 |
100% |
100% |
| Average |
2014/15 |
100% |
100% |
| Dry |
2015/16 |
100% |
100% |
| Extreme Dry |
2006/07 |
92% |
93% |
Goulburn and Loddon System Outlook for Seasonal Determination of High-Reliability Water Shares
| Wet |
2016/17 |
100% |
100% |
| Average |
2021/22 |
75% |
84% |
| Dry |
2024/25
|
61% |
66% |
| Extreme Dry |
2006/07 |
57% |
59% |
Broken System Outlook for Seasonal Determination of High-Reliability Water Shares
| Wet |
2016/17 |
100% |
100% |
| Average |
2021/22 |
78% |
100% |
| Dry |
2018/19 |
39% |
45% |
| Extreme Dry |
2006/07 |
27% |
29% |
Bullarook System Outlook for Seasonal Determination of High-Reliability Water Shares
| Wet |
|
100% |
100% |
| Average |
2012/13 |
66% |
100% |
| Dry |
2007/08 |
0% |
0% |
| Extreme Dry |
2015/16 |
0% |
0% |
Seasonal determinations under additional scenarios for each system are available from the .
Upcoming Resource Manager Announcements
- The next 2025/26 seasonal determination announcement will be released on Monday, 3 November 2025.