5.6 Other surface water liability
The volume for this line item is 0 ML.
The Sydney Catchment Authority manages banked environmental flow in the Sydney region.
Between 1 June 2005 and 3 March 2008, due to the continuing drought, environmental flow releases into the Hawkesbury–Nepean River required under the Sydney Catchment Authority's water management licence were halved as directed by the Minister for Water in New South Wales. A condition of halving the flows was that the Sydney Catchment Authority would maintain an environmental water bank in storages. The banked water was to be released only under the direction of the Minister for Water in New South Wales.
No banked environmental flow releases were made during the 2011-12 year. With the implementation of the Water Sharing Plan for the Greater Metropolitan Region Unregulated River Sources and also as a result of spills that occurred during flooding in March 2012 the New South Wales Office of Water directed that releases from banked environmental water would cease from 1 July 2011 and the water remaining in the bank was deleted.
The volume for this line item is derived from discussions with the Sydney Catchment Authority.
Assumptions, limitations, caveats and approximations