Seasonal Determination update for season 2017/18 VIC

 Friday 15 December, 2017

Seasonal determinations update for 2017/18

The Resource Manager for northern Victoria today updated the 2017/18 seasonal determinations.

The low-reliability water shares (LRWS) seasonal determination in the Broken system increases from 63 per cent to 100 per cent. The Broken system also has 100 per cent high-reliability water shares (HRWS).

The LRWS seasonal determination in the Campaspe system increases from 46 per cent to 49 per cent. The Campaspe system also has 100 per cent HRWS.

The seasonal determination in the Murray, Goulburn and Loddon systems remain unchanged at 100 per cent HRWS. The Bullarook system remains at 100 per cent HRWS and 100 per cent LRWS.

Resource Manager Mark Bailey said improved flows following rain in early December had increased resource availability.

"The rain in early December increased storage levels in the Murray, Broken and Goulburn systems. This additional water enabled the Broken system seasonal determination to increase and reduced the shortfall to a low-reliability water share seasonal determination in the Murray and Goulburn systems," Dr Bailey said.

"The current shortfall to a low-reliability water share seasonal determination in the Murray system is about 670 GL. The shortfall in the Goulburn system is about 840 GL.

"Closure of these shortfalls during 2017/18 will depend on the reduction of current commitments and strong storage inflows to increase resources."

The seasonal determinations for northern Victorian water systems on Friday, December 15 are:

Water System

High Reliability Water Share

Low Reliability Water Share

Murray

 100%

0% 

Broken

 100%

100%

Goulburn

 100%

0%

Campaspe

 100%

49% 

Loddon

 100%

0%

Bullarook Creek

 100%

100%


Trading Opportunities

Allocation trade from New South Wales to Victoria is limited to the lesser of a net annual volume of 200 GL or a volume that keeps the risk of spill in the Murray system below 50 per cent. The trade limit allows 200 GL of net trade from New South Wales to Victoria.

The Goulburn system’s inter-valley trade (IVT) account owes about 274 GL to the Murray system. The Goulburn, Campaspe and Loddon systems can trade to the Victorian Murray system, New South Wales and South Australia while the total volume owed to the Murray system is less than 200 GL. The Goulburn, Campaspe and Loddon systems can trade from the Victorian Murray system, New South Wales and South Australia while the total volume owed to the Murray system is greater than zero.

Deliveries of Goulburn system IVT to support Murray system operations may commence later this month or in January. The timing and volume delivered to the Murray system depends heavily on seasonal operating conditions.

Customers participating in the water trading market can monitor trade availability on the Water Register website.

The trading of water allocations from above the Barmah Choke to downstream of the Barmah Choke is restricted to protect the delivery of downstream water entitlements. Customers can monitor trading opportunities across the Barmah Choke on the Murray-Darling Basin Authority website.

Upcoming Resource Manager Announcements

  • The risk of spill for the Campaspe system is updated on Wednesday 10 January 2018.
  • The 2017/18 seasonal determinations are updated on Monday 15 January 2018.
Seasonal determination updates will be released only on the 15th of each month (or the following business day) now that all northern Victorian systems have reached 100 per cent of high-reliability water shares.

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