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Adelaide: Statement of Water Assets and Water Liabilities

as at 30 June 2021

  • Water availability in the Adelaide region's storages decreased during 2020–21.
  • Water availability is represented by the net water assets, which are the volume of water in storages minus the water liabilities.

Schematic representation of the Adelaide region. Total surface water and groundwater assets at 30 June 2021 was 181 GL. Total water liabilities was 7 GL. Closing net water assets at 30 June 2021 was 174 GL, 1% 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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 2021 ML2020 ML2019 ML2018 ML2017 ML2016 ML
Water assets
Surface water95,017100,00292,33792,399111,177103,300
Accessible storages88,44192,16985,14585,942104,94497,067
Dead storages6,2336,2336,2336,2336,2336,233
Rivers3431,600959224––
Claims: inter-region000000
 
Groundwater86,35686,35686,35686,35686,35686,356
Aquifers86,35686,35686,35686,35686,35686,356
 
Urban water system000000
Claims: surface water*000000
 
Irrigation scheme000000
Claims: inter-region000000
 
Total water assets181,373186,358178,693178,755197,533189,656
Water liabilities
Surface water liability979622307430545377
Allocation remaining: individual users979622307430545377
Allocation remaining: urban system*000000
 
Groundwater liability6,0559,2898,1767,43121,5429,088
Allocation remaining: individual users6,0559,2898,1767,43121,5429,088
 
Total water liabilities7,0349,9118,4837,86122,0879,465
Net water assets
Net surface water assets94,03899,38092,03091,969110,632102,923
Opening net surface water assets99,38092,03091,969110,632102,92394,617
Change in net surface water assets(5,342)7,35061(18,663)7,7098,306
Closing net surface water assets94,03899,38092,03091,969110,632102,923
 
Net groundwater assets77,06777,06778,18078,92564,81477,268
Opening net groundwater assets77,06778,18078,92564,81477,26879,035
Change in net groundwater assets3,234(1,113)(745)14,111(12,454)(1,767)
Closing net groundwater assets80,30177,06778,18078,92564,81477,268
 
Net urban water assets000000
Opening net urban water assets000000
Change in net urban water assets000000
Closing net urban water assets000000
 
Net irrigation water assets000000
Opening net irrigation water assets000000
Change in net irrigation water assets000000
Closing net irrigation water assets000000
Total closing net water assets 174,339176,447170,210170,894175,446180,191
       
Total change in net water assets(2,108)6,237(684)(4,552)(4,745)6,539

 

* between-store flows

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