Outlook - 15 September 2015

Outlook for the 2015/16 season

"Inflows into the Murray, Goulburn and Broken systems during August were near the ‘Dry' outlook category," Resource Manager Dr Mark Bailey said.

"Inflows into the Loddon and Campaspe systems are tracking closer to the ‘Extreme Dry' category," said Dr Bailey. "There has been very little rain in recent weeks across all the catchment areas and inflows have continued to decline."

The full inflow record was used to assess seasonal determinations for a range of inflow scenarios. The scenarios for different inflow conditions were produced using the following terminology:

Wet: Inflow volumes that have 10 chances in 100 (or one chance in 10) of being exceeded.

Average: Inflow volumes that have 50 chances in 100 (or five chances in 10) of being exceeded.

Dry: Inflow volumes that have 90 chances in 100 (or nine chances in 10) of being exceeded.

Extreme Dry: Inflow volumes that have 99 chances in 100 (or 9.9 chances in 10) of being exceeded.

 The following tables summarise possible HRWS seasonal determinations in the Murray, Goulburn, Loddon, Campaspe and Broken systems through the 2015/16 season.

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

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

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

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

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

2015/16 Low-Reliability Water Share Outlooks

Details about the chances for seasonal determinations of low-reliability water shares will be included when seasonal determinations reach 100 per cent of high-reliability water shares.

Trading Opportunities

The Goulburn system's inter-valley trade (IVT) account owes about 100 GL to the Murray system on September 15. 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.

 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 spill risk limit allows more than 200 GL of trade, and so the net annual volume of 200 GL applies unless advised otherwise.

 Customers participating in the water trading market can monitor trade availability on the Water Register website, waterregister.vic.gov.au/water-trading/allocation-trading.

 The Murray-Darling Basin Authority is limiting the trading of water allocations from above the Barmah Choke to downstream, to protect the delivery of downstream water entitlements. Customers can monitor trading opportunities across the Barmah Choke on the Murray-Darling Basin Authority website at http://mdba.gov.au/river-data/barmah-choke.

Upcoming Resource Manager announcements

• The next 2015/16 seasonal determination announcement will be released on Thursday October 1, 2015.

 For information about the Resource Manager for northern Victorian regulated water systems, including seasonal determinations, resource availability and carryover volumes, please visit www.nvrm.net.au. The status of Victorian shares of Murray storages is available at www.mdba.gov.au/.

 Information about El Niño is available from the Bureau of Meteorology at www.bom.gov.au/climate/enso.

Details of the August to October rainfall outlook and seasonal streamflow forecasts are available at www.bom.gov.au/climate/outlooks.