Increase in Murray, Broken and Campaspe Seasonal Determinations

Determination Data

Seasonal determinations for northern Victoria regulated river systems.

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 81% of high-reliability water shares (HRWS), an increase of 6%. The Broken system seasonal determination has increased by 2% to be 47% HRWS. Campaspe system customers have a seasonal determination of 100% HRWS and a seasonal determination of 67% of low-reliability water shares (LRWS), an increase of 2% LRWS.

The seasonal determination in the Goulburn and Loddon systems remains unchanged at 100% HRWS. The Bullarook system seasonal determination also remains unchanged at 100% HRWS and 100% LRWS.

“Inflows have receded across the northern Victorian catchments in recent weeks,” said Dr Mark Bailey, Resource Manager. “Unregulated flows are still contributing to system operating requirements in the Murray and Goulburn systems, but inflows into the Broken, Campaspe and Loddon systems are receding to levels that may require regulated releases from storages in coming weeks to meeting system operating requirements.”

Storages in the Murray, Goulburn and Campaspe systems all remain above 96% of capacity. Water held in spillable water accounts in these systems is subject to physical spills from the storage or pre-releases. The risk of spill from Dartmouth Reservoir, Lake Eildon and Lake Eppalock remains high. In the past fortnight, approximately 33,500 ML has been pre-released from Lake Eildon and about 3,000 ML has spilled from Goulburn-Murray Water’s share of Lake Eppalock.

Upcoming Resource Manager Announcements

The next seasonal determination announcement will be issued on Monday 15 October 2012.

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