Sydney: Statement of Water Assets and Water Liabilities

as at 30 June 2022

  • Water availability in the Sydney region's storages slightly decreased during 2021–22.
  • Water availability is represented by the net water assets, which are the volume of water assets minus the water liabilities.

Schematic representation of the Sydney region. Total water assets at 30 June 2022 was 2,680 GL. Total water liabilities was 0 GL. Closing net water assets at 30 June 2022 was 2,680 GL,0.3% less than last year.

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.

 

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  2022 ML 2021 ML 2020 ML 2019 ML 2018 ML 2017 ML
Water assets
Surface water 2,679,581 2,686,446 2,195,485 1,449,663 2,044,868 2,691,029
Accessible storage 2,562,973 2,564,179 2,083,900 1,339,422 1,933,813 2,579,094
Dead storage 108,430 108,430 108,430 108,430 108,430 108,430
Rivers 8,178 13,837 3,155 1,811 2,625 3,505
 
Groundwater – – – – – –
Aquifers – – – – – –
 
Urban water system – – – – – –
Urban water supply system – – – – – –
 
Total water assets 2,679,581 2,686,446 2,195,485 1,449,663 2,044,868 2,691,029
Water liabilities
Surface water liability 0 0 0 0 0 0
Allocation remaining: individual users 0 0 0 0 0 0
 
Groundwater liability 0 0 0 0 0 0
Allocation remaining: individual users 0 0 0 0 0 0
 
Total water liabilities 0 0 0 0 0 0
Net water assets
Net surface water assets 2,679,581 2,686,446 2,195,485 1,449,663 2,044,868 2,691,029
Opening net surface water assets 2,686,446 2,195,485 1,449,663 2,044,868 2,691,029 2,821,555
Change in net surface water assets (6,865) 490,961 745,822 (595,205) (646,161) (130,526)
Closing net surface water assets 2,679,581 2,686,446 2,195,485 1,449,663 2,044,868 2,691,029
 
Net groundwater assets – – – – – –
Opening net groundwater assets – – – – – –
Change in net groundwater assets 0 0 0 0 0 0
Closing net groundwater assets – – – – – –
 
Net urban water assets – – – – – –
Opening net urban water assets – – – – – –
Change in net urban water assets 0 0 0 0 0 0
Closing net urban water assets – – – – – –
Total closing net water assets 2,679,581 2,686,446 2,195,485 1,449,663 2,044,868 2,691,029
Total change in net water assets (6,865) 490,961 745,822 (595,205) (646,161) (130,526)

Note: quantification approaches used to derive each item volume are provided in the Methods