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Adelaide: Statement of Changes in Water Assets and Water Liabilities

For the water account period 1 July 2024 to 30 June 2025

  • The volume of water in Adelaide's storages decreased by 14 GL during 2024–25.
  • This decrease represents the change in water volume in the region's surface water storages.

Schematic representation of the water flows associated with the Adelaide region's water stores, as well as the change to the region's water storage during the current reporting period.

The Statement of Changes in Water Assets and Water Liabilities provides a detailed breakdown of the actual water flows associated with the Adelaide region's water stores over the past six water accounting periods ending 30 June, as well as the changes in water assets and water liabilities that occurred during each reporting period.

To view the Statement of Changes in Water Assets and Water Liabilities, scroll down to the table below.

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 2025 (ML)2024 (ML)2023 (ML)2022 (ML)2021 (ML)2020 (ML)
Water inflows
Surface water inflows 174,752239,741391,917362,730288,933293,729
Precipitation on storages4,3666,69512,4939,5207,8057,212
Precipitation on rivers1.1733,1117,5945,3292,4842,291
Flood return2,6877,81711,37542,20216,61521,877
Runoff56,526111,343296,280197,303123,711145,085
Urban water return*0005166,9123,880
Delivery of inter-region agreement to surface water110,000110,77564,175107,860131,406113,384
 
Groundwater inflows 209,710366,707467,109376,598348,151285,665
Recharge from landscape162,621278,187342,435260,807269,519222,816
Recharge from surface water*37,15856,90094,93070,30652,07747,031
Inflow from outside region655752617446866
Inflow from the sea1,1541,2601,0319009871,397
Leakage from urban water system*5,16726,10225,37841,09621,67810,908
Managed aquifer recharge by urban system*4551,0062189841,054318
Managed aquifer recharge by individual users2,5002,5002,5002,4612,7683,129
 
Urban water system inflows307,441419,207381,006387,056403,442283,964
Delivery of desalinated water26,4544,8274,8045,3235,13940,001
Non-allocated diversion from surface water*93,50094,15954,54991,681112,68494,183
Allocated diversion from surface water70,60577,175100,95770,28450,32333,745
Wastewater collected116,882243,046220,696219,768235,296116,035
 
Irrigation scheme inflows38,82752,76647,76053,09848,56531,841
Delivery of inter-region agreement to irrigation scheme11,00011,00011,00010,94911,03210,765
Non-allocated extraction of groundwater*230230230229207279
Recycled water received from other water system700700700718718414
Recycled water received from urban water system*26,89740,83635,83041,20236,60820,383
 
Total water inflows730,7301,078,4211,287,7921,179,4821,089,091895,199
Water outflows
Surface water outflows 611,285520,534809,699721,781392,370359,786
Evaporation from storages14,41617,08717,65716,73616,05413,970
Evaporation from rivers2,6564,9659,2377,8905,7122,519
Outflow to sea312,973173,959361,824317,951101,141127,245
Overbank flow58,24368,149141,925143,96651,01938,081
Recharge to groundwater*37,15856,90094,93070,30652,07747,031
Allocated diversion to individual users21,73428,14028,6202,9673,3603,012
Non-allocated diversion to the urban system*93,50094,15954,54591,681112,68494,183
Allocated diversion to the urban system*70,60577,175100,95770,28450,32333,745
 
Groundwater outflows 67,55448,07947,93148,41346,44047,736
Outflow to outside region1,0061,3941,333208221293
Outflow to sea1,9722,3402,2534,4371,2461,772
Allocated extraction to individual users64,34644,11544,11543,53944,76645,392
Non-allocated extraction to irrigation scheme*230230230229207279
 
Urban water system outflows269,857539,666493,424544,130477,812245,638
Discharge to sea63,666150,476163,958138,694128,56462,726
Leakage to groundwater*5,16726,10225,37841,09621,67810,908
Managed aquifer recharge*4551,0062189841,054318
Other losses8,67314,8404,5767,0864,4322,286
Other wastewater losses7,32113,794013,9145,0141,633
Return to surface water*0005166,9123,880
Supply of drinking water to urban customers153,444280,862257,112276,580257,962140,730
Supply of drinking water to other regions000000
Supply of recycled water to urban customers31,13152,58642,18265,26052,19623,145
Treated wastewater discharge to landscape-----12
 
Irrigation scheme outflows38,82734,20034,20034,23832,98834,776
Irrigation delivery38,82734,20034,20034,23832,98834,776
 
Total water outflows987,5231,142,4791,385,2541,348,562949,610687,936
 
Unaccounted-for difference242,84914,469134,840173,493(137,427)(201,701)
 
 
Change in water storage      
Change in surface water storage(13,944)(49,589)37,3784,4132,0545,562
Change in groundwater storage000000
Change in urban water storage000000
Total change in water storage(13,944)(49,589)37,3784,4132,0545,562
 
Closing water storage165,450179,394228,983191,605187,192185,138
 
 
Change in water assets claims
Surface water000000
Surface water claims: inter-region000000
 
Urban water supply000000
Urban water claims on surface water*000000
 
Irrigation scheme000000
Irrigation scheme claims: inter-region000000
Total change in water assets claims000000
 
Change in water liability
Surface water liability0(5,959)(10,127)15,754(290)315
Surface water allocation remaining: individual users0(5,959)(10,127)15,754(290)315
Surface water liability to urban water supply*000000
 
Groundwater liability0(2,516)(1,810)11,604(1,501)888
Groundwater allocatoin remaining: individual users0(2,516)(1,810)11,604(1,501)888
Total change in water liability0(8,475)(11,937)27,358(1,791)1,203
Net change in water assets(13,944)(41,114)49,315(22,945)3,8454,359

* between-store flows

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