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South East Queensland: 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 South East Queensland's storages increased by 104 GL in 2024–25.
  • This increase is primarily driven by changes to the water volume in South East Queensland's surface water storages.

Schematic representation of the water flows associated with the South East Queensland 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 South East Queensland 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 inflows8,168,4485,016,3601,763,31516,083,1994,177,3593,364,834
Precipitation on storages300,492199,601176,418416,348158,108118,553
Precipitation on rivers101,34552,71829,664210,76152,78638,616
Flood return367,421174,601110,244512,856237,450105,053
Runoff7,350,2424,575,2361,436,60714,921,0613,714,0623,088,580
Discharge from users2,0002,0302,0302,0301,1632,735
Treated wastewater discharge from urban water system*46,94812,1748,35220,14313,79011,297
 
Groundwater inflows779,483483,637429,847874,103551,359285,333
Recharge from surface water*755,363458,008405,441850,236528,082259,411
Leakage from urban water system*24,12025,62924,40623,86723,27725,922
 
Urban water system inflows692,620659,121611,022664,704624,016642,762
Delivery of desalinated water8,2659,6277,24012,71419,48613,805
Diversion of surface water*324,718338,715323,172294,590310,807351,788
Extraction of groundwater*4,3225,7776,1553,6327,1807,881
Inter-region delivery to the urban system0000714
Wastewater collected355,315305,002274,455353,768286,536269,274
 
Total water inflows9,640,5516,159,1182,804,18417,622,0065,352,7344,292,929
Water outflows
Surface water outflows9,366,2094,719,4653,078,87317,973,4334,520,3993,069,941
Evaporation from storages338,648304,727314,959269,403235,470271,888
Evaporation from rivers55,25837,92833,43858,17940,71525,637
Leakage to landscape245,117219,643118,984198,39892,57265,980
Outflow to sea6,912,5672,972,5961,649,58415,268,7822,662,2131,842,257
Overbank flow711,958355,710205,8001,015,333619,611199,619
Recharge to groundwater*755,363458,008405,441850,236528,082259,411
Allocated diversion to individual users17,15226,69321,83512,78225,43148,273
Diversion to the urban system*324,718338,715323,172294,590310,807351,788
Diversion to statutory rights3,9923,9923,9303,9923,9923,806
Non-allocated diversion to individual users1,4361,4531,7301,7381,5061,282
 
Groundwater outflows10,59019,41316,1798,80819,14626,231
Allocated extraction to individual users4,5235,7765,6483,6317,51011,222
Extraction to the urban system*4,3225,7776,1553,6327,1807,881
Non-allocated extraction to individual users1,7457,8604,3761,5454,4567,128
 
Urban water system outflows614,155610,489543,391617,098590,007607,146
Discharge to sea229,109219,817194,043241,443202,966191,650
Leakage to groundwater*24,12025,62924,40623,86723,27725,922
Other losses7,7377,1656,9056,4116,8388,354
Other wastewater losses1,9433,1694776,0782,8711,059
Supply of drinking water to urban customers290,175327,852291,242305,616325,640353,919
Supply of recycled water to urban customers13,10813,66516,99912,57714,04113,565
Treated wastewater discharge to surface water*46,94812,1748,35220,14313,79011,297
Urban discharge to landscape1,0151,0189679635841,380
Wastewater transfer to other region000000
 
Total water outflows9,990,9545,349,3673,638,44318,599,3395,129,5523,703,318
 
Unaccounted-for difference454,431(624,747)478,3671,782,508(270,860)(702,691)
 
 
Change in water storage      
Change in surface water storage104,028185,042(355,816)805,061(47,678)(132,135)
Change in groundwater storage0(38)(76)114019,055
Change in urban water storage000000
Total change in water storage      
 
Closing water storage104,028185,004(355,892)805,175(47,678)(113,080)
 
 
Change in water assets claims
Urban water claims000000
Urban water claims on surface water000000
Total change in water assets claims000000
 
Change in water liability
Total change in water liability000000
Surface water liability000000
Surface water allocation remaining: individual users000000
Surface water liability to urban water supply*000000
 
Groundwater liability000000
Groundwater allocation remaining: individual users000000
Total change in water liability000000
Net change in water assets104,028185,004(355,892)805,175(47,678)(113,080)

*between-store flows

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