Seasonal Determinations for 2012/13 Updated

Announcement Date: 1 Aug 2012
Next Announcement Due: 15 Aug 2012

Determination Data

Seasonal determinations for northern Victoria regulated river systems.

  High Reliability Water Share Change to High Reliability Water Share Low Reliability Water Share Comments
Murray 41% +7% 0% Not declared
Broken 26% +4% 0% -
Goulburn 88% +14% 0% Not declared
Campaspe 100% 0% 18% Not declared
Loddon 88% +14% 0% -
Bullarook Creek 100% 0% 100% -

Further Information

The Resource Manager for northern Victorian regulated water systems today announced an update to the seasonal determinations for the 2012/13 season.

The Murray system seasonal determination is 41% of high-reliability water shares (HRWS), an increase of 7%. The seasonal determination in the Goulburn and Loddon systems has increased by 14% to be 88% HRWS. The Broken system seasonal determination has increased by 4% to be 26% HRWS. Campaspe system customers have a seasonal determination of 100% HRWS and a seasonal determination of 18% of low-reliability water shares (LRWS).

The Bullarook system seasonal determination remains unchanged at 100% HRWS and 100% LRWS.

"The increase in seasonal determinations announced today are due to sustained inflows across all northern Victorian catchments,” said Dr Mark Bailey, Resource Manager. “Storages across northern Victoria are nearing capacity due to the combination of inflows this season and carried over allocation from 2011/12. Approximately 205,000 megalitres has been pre-released from Lake Eildon since 1 July. These releases are treated as a spill from storage and the volumes in Spillable Water Accounts in the Goulburn system have been reduced as a result."

"No spills have occurred from Lake Dartmouth in the Murray system or Lake Eppalock in the Campaspe system. Both storages are still rising and hold more than 90% of capacity, which indicates a high risk of spill exists. Any pre-release or physical spill from these storages will reduce Spillable Water Account volumes in their respective systems, allowing all storage inflows to contribute to increased seasonal determinations."

Customers participating in the water trading market are reminded that the Murray-Darling Basin Authority has relaxed the rule controlling allocation trade from upstream of the Barmah Choke to downstream users. The ability to trade across the Barmah Choke will be regularly reviewed by the Murray-Darling Basin Authority and the relaxation may be lifted at any time during the season.

Upcoming Resource Manager Announcements

The next seasonal determination announcement for 2012/13 and updated outlooks will be issued on Wednesday 15 August 2012.

The next assessment of the probability of spill in the Murray, Goulburn and Campaspe systems will be issued on Friday 10 August 2012.