Sydney
21.6 Other surface water liability increases
Supporting information
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, environmental flow releases into the Hawkesbury and Nepean rivers required under the Sydney Catchment Authority's water management licence were halved as directed by the minister responsible for water in New South Wales due to the continuing drought. A condition of halving the flows was that the ydney Catchment Authority would maintain a rolling 12-month bank in storage reservoirs and release the banked water as directed by the minister. The total banked water was 5,363 ML at the beginning of the 2011–12 year.
No banked environmental flow releases were made during the 2011-12 year in accordance with the New South Wales Office of Water directive that releases from banked environmental water cease from 1 July 2011. This coincided with the implementation of the Greater Metropolitan Region Water Sharing Plan.
As a result of reservoir spills that occurred during flooding in March 2012, the water recorded as being in the bank was deleted.
Reconciliation of this line item is shown in the following table.| Calculation |
Line item |
Volume (ML) |
|
5.6 Opening balance (as at 30 June 2011) |
5,363 |
add |
0 |
|
less |
0 |
|
less |
5,363 |
|
equals |
5.6 Closing balance (as at 30 June 2011) |
0 |
Quantification approach
Data source
The Sydney Catchment Authority and the New South Wales Office of Water agreement; Sydney Catchment Authoirty database of daily requirements and releases; Sydney Catchment Authority compliance reporting to the New South Wales Office of Water.
Provided by
Method
The volume stated for this line item is based on agreements between the Sydney Catchment Authority and New South Wales Office of Water.