Water

Risk of spill unchanged in systems

by
July 21, 2017

‘‘Victoria’s share of the volume in Lake Hume gives the Murray system a 54 per cent risk of spill,’’ Dr Bailey said.

There is no change to the risk of spill in the Murray, Goulburn or Campaspe systems.

Northern Victoria resource manager Mark Bailey said the risk of spill in each of the Murray, Goulburn and Campaspe systems during 2017-18 remained above the 10 per cent threshold needed to declare a low risk of spill.

‘‘Victoria’s share of the volume in Lake Hume gives the Murray system a 54 per cent risk of spill,’’ Dr Bailey said.

‘‘The risk of spill from Lake Eildon in the Goulburn system is about 20 per cent and the risk of spill from Lake Eppalock in the Campaspe system is about 68 per cent.

‘‘Water in spillable water accounts in the Murray, Goulburn and Campaspe systems remains quarantined from use or trade.’’

Dr Bailey said the risk of spill assessment did not describe the chances of flooding in the Murray, Goulburn or Campaspe systems this season.

‘‘The risk of spill is a water accounting assessment,’’ Dr Bailey said.

‘‘It does not refer to flood risks downstream of the storages.’’

Allocation trade from NSW to Victoria is limited to the lesser of a net annual volume of 200Gl or a volume that keeps the risk of spill in the Murray system below 50 per cent.

Trade from NSW to Victoria is currently limited to the volume traded from Victoria to NSW because the risk of spill in the Murray system is above 50 per cent.

The risk of spill in the Murray system will be next updated on Thursday, August 10.

■For information about the resource manager for northern Victorian regulated water systems, including seasonal determinations and resource availability, visit www.nvrm.net.au

The status of Victorian shares of Murray storages is available at the MDBA website at www.mdba.gov.au

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