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National Water Account 2020

Daly: Statement of Changes in Water Assets and Water Liabilities

for the year ended 30 June 2020

  • The volume of water in the region's storages decreased during 2019–20 for the third consecutive year.
  • This decrease mainly represents the change in water volume in the region's aquifers.

The Statement of Changes in Water Assets and Water Liabilities is provided in the table below. The statement presents the actual water flows associated with the region's water stores, as well as the changes in water assets and water liabilities that occurred during the year.

 

 

Select comparative year

 

 2020 ML2019 ML2018 ML2017 ML2016 ML2015 ML
Water inflows
Surface water inflows2,446,3466,185,22411,705,00313,098,9579,429,2197,540,191
Precipitation33,55945,505110,995174,6389989
Discharge: groundwater*608,120740,000842,000787,000761,0001,010,000
Runoff1,799,4685,376,18010,449,36312,010,0008,668,0006,530,000
Flood return5,07923,419302,525127,199
Discharge: wastewater120120120120120102
 
Groundwater inflows111,380135,000406,0001,326,000418,000428,000
Inter-region inflow10,00010,00010,00010,00010,00010,000
Recharge: landscape93,580120,000370,0001,273,000370,000382,000
Recharge: surface water*7,8005,00026,00043,00038,00036,000
 
Total water inflows2,557,7266,320,22412,111,00314,424,9579,847,2197,968,191
Water outflows
Surface water outflows2,014,0272,007,56411,960,24111,753,8729,677,8814,117,413
Evaporation66,65393,448114,719162,59236,18740,195
Outflow1,930,4841,900,83511,362,40510,886,0019,594,6264,032,345
Recharge: groundwater*7,8005,00026,00043,00038,00036,000
Overbank flow00448,049653,665
Diversion: statutory rights5,3695,3695,3695,3695,3695,369
Allocated diversion: individual users844834973801971**799
Allocated diversion: urban system2,8772,0782,7262,4442,728**2,705
 
Groundwater outflows661,210779,125880,896823,264792,0241,035,600
Inter-region outflow000000
Discharge: landscape
Discharge: surface water*608,120740,000842,000787,000761,0001,010,000
Extraction: statutory rights4,2804,2804,2804,2804,2804,280
Non-allocated extraction: individual users180180180180180180
Allocated extraction: individual users48,23234,38234,15731,04425,599**20,247
Allocated extraction: urban system398283279760965**893
 
Total water outflows2,675,2372,786,68912,841,13712,577,13610,469,905**5,153,013
Unaccounted-for difference(378,544)(4,135,948)268,499(1,331,821)286,686**(3,407,272)
 
 
Change in water storage      
Change in surface water storage(5,165)(3,413)(1,635)14,3880(94)
Change in groundwater storage(490,890)(599,000)(460,000)516,000(336,000)**(592,000)
Total change in water storage(496,055)(602,413)(461,635)530,388(336,000)(592,094)
 
Closing water storage
 
 
Change in water liability
Surface water liability000000
Allocation remaining: individual users00000**0
Allocation remaining: urban system00000**0
 
Groundwater liability000000
Allocation remaining: individual users00000**0
Allocation remaining: urban system00000**0
Total change in water liability000000
       
Net change in water assets(496,055)(602,413)(461,635)530,388(336,000)**(592,094)
 

 

* between-store flows

** different to published volume in historical accounts (see Governance for more information)

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