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National Water Account 2016

Perth: Statement of Water Assets and Water Liabilities

The volume of water available in the Perth region at 30 June 2016 was 51,390 ML, compared with 84,832 ML at the start of the 2015–16 year. Water availability is represented by the net water assets, which are the volume of water in storages minus the water liabilities.



The Statement of Water Assets and Water Liabilities is provided in the table below. The statement presents the volume of water assets, and water liabilities at the start and end of the reporting year.

Items in the statements are hyperlinked to the associated section of the Statement details. Methods used to derive item volumes are provided in the Reference information.


as at 30 June 2016

 2016 ML2015 ML
Water assets
Surface water167,165202,362
Unregulated river
Regulated river
Lakes and wetlands
Total surface water167,165202,362
Water table aquifer
Underlying aquifers
Total groundwater
Total water assets167,165202,362
Water liabilities
Surface water liability8,5208,437
Allocation remaining: individual users8,5208,437
Total surface water liability8,5208,437
Groundwater liability107,255109,093
Allocation remaining: individual users107,255109,093
Total groundwater liability107,255109,093
Total water liabilities115,775117,530
Opening net water assets84,83275,881
Change in net water assets(33,442)8,951
Closing net water assets51,39084,832