Bureau Home » Water Information » National Water Account » 2023 Account » Adelaide » Water Accounting Statements » Changes in water assets and water liabilities

Adelaide: Statement of Changes in Water Assets and Water Liabilities

For the water account period 01 July 2022 - 30 June 2023

  • The volume of water in the region's storages increased during 2022–23 for the fifth consecutive year.
  • This increase represents the change in water volume in the region's surface water storages.

Schematic representation of the Adelaide region. Total water inflows during 2022–23 was 1,290 GL. Total water outflows was 1,203 GL. Water storage at 30 June 2023 was 37 GL higher than the previous year.

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.

 

Expand all Collapse all
 

Select comparative year

 
   2023 (ML) 2022 (ML) 2021 (ML) 2020 (ML) 2019 (ML) 2018 (ML)
Water inflows
Surface water inflows 535,653 462,665 359,398 367,650 378,462 399,713
Precipitation on storages 12,445 9,520 7,805 7,212 7,215 9,662
Precipitation on rivers 7,602 5,329 2,484 2,291 2,040 2,641
Delivery of inter-region agreement to surface water 135,000 134,134 131,406 113,384 157,612 71,068
Discharge from groundwater* 73,921 73,921 73,921 73,921 73,921 73,921
Flood return 11,376 42,202 16,615 21,877 26,257 33,914
Runoff 295,309 197,301 123,711 145,085 109,907 208,507
Treated wastewater discharge from urban water system* - - - - - -
Urban water return* - 258 3,456 3,880 1,150 -
 
Groundwater inflows 453,617 355,564 336,786 285,665 244,763 335,867
Inflow from outside region 45 44 68 66 228 53
Inflow from outside region at coast 911 900 987 1,397 1,485 1,353
Leakage from farm dams - - - - - -
Leakage from urban water system* 12,689 20,548 10,839 10,908 2,162 11,941
Managed aquifer recharge by individual users 2,500 2,461 2,768 3,129 1,487 3,215
Managed aquifer recharge by urban system* 109 492 527 318 250 297
Recharge from landscape 342,389 260,814 269,520 222,816 196,767 255,831
Recharge from surface water* 94,974 70,305 52,077 47,031 42,384 63,177
 
Urban water system inflows 270,658 277,173 285,794 283,964 284,793 262,380
Delivery of desalinated water 4,804 5,323 5,139 40,001 4,901 4,268
Diversion of surface water* 155,506 161,965 163,007 127,928 167,500 157,309
Wastewater collected 110,348 109,885 117,648 116,035 112,392 100,803
 
Irrigation scheme inflows 29,845 32,497 30,261 31,841 37,262 26,013
Delivery of inter-region agreement to irrigation scheme 11,000 10,949 11,032 10,765 11,051 4,801
Non-allocated extraction of groundwater* 230 229 207 279 200 200
Recycled water received from other water system 700 718 718 414 622 620
Recycled water received from urban water system* 17,915 20,601 18,304 20,383 25,389 20,392
 
Total water inflows 1,289,773 1,127,899 1,012,239 969,120 945,280 1,023,973
Water outflows
Surface water outflows 801,929 738,517 408,424 372,438 389,551 467,790
Evaporation from storages 35,314 33,472 32,108 26,622 31,726 35,262
Evaporation from rivers 9,254 7,890 5,712 2,519 2,522 3,564
Allocated diversion to individual users 2,973 2,967 3,360 3,012 3,730 3,340
Diversion to the urban system* 155,506 161,965 163,007 127,928 167,500 157,309
Outflow 361,956 317,951 101,141 127,245 106,434 157,437
Overbank flow 141,952 143,967 51,019 38,081 35,255 47,701
Recharge to groundwater* 94,974 70,305 52,077 47,031 42,384 63,177
 
Groundwater outflows 120,332 122,334 120,361 121,657 112,062 137,870
Allocated extraction to individual users 44,115 43,539 44,766 45,392 34,368 53,793
Discharge to landscape - - - - - -
Discharge to surface water* 73,921 73,921 73,921 73,921 73,921 73,921
Extraction of statutory rights 0 0 0 0 0 7,797
Non-allocated extraction to irrigation scheme* 230 229 207 279 200 200
Outflow to outside region 219 208 221 293 252 269
Outflow to outside region at coast 1,847 4,437 1,246 1,772 3,321 1,890
 
Urban water system outflows 246,712 272,065 238,906 245,638 251,453 260,410
Discharge to sea 81,979 69,347 64,282 62,726 56,602 63,033
Leakage to groundwater* 12,689 20,548 10,839 10,908 2,162 11,941
Managed aquifer recharge* 109 492 527 318 250 297
Other losses 2,288 3,543 2,216 2,286 11,902 2,038
Other wastewater losses - 6,957 2,507 1,633 8,155 6,941
Recycled water delivery to irrigation users* 17,915 20,601 18,304 20,383 25,389 20,392
Return to surface water* - 258 3,456 3,880 1,510 -
Supply of drinking water to irrigation users - - - - - -
Supply of drinking water to other regions - - - - - 5,854
Supply of drinking water to urban users 128,556 138,290 128,981 140,730 138,368 141,744
Supply of recycled water to urban users 2,947 12,029 7,794 2,762 5,850 6,731
Treated wastewater discharge to surface water* - - - - - -
Urban discharge to landscape - - - 12 1,265 1,439
 
Irrigation scheme outflows 34,200 34,238 32,988 34,776 35,628 31,853
Irrigation delivery 34,200 34,238 32,988 34,776 35,628 31,853
 
Total water outflows 1,203,173 1,167,154 800,679 774,509 788,694 897,923
 
Unaccounted-for difference (49,227) 43,671 (209,506) (189,049) 155,903 (145,510 )
 
 
Change in water storage 37,373 4,416 2,054 5,562 683 (19,460)
Change in surface water storage 37,373 4,416 2,054 5,562 683 (19,460)
Change in groundwater storage 0 0 0 0 0 0
Change in urban storages 0 0 0 0 0 0
Total change in water storage 37,373 4,416 2,054 5,562 683 (19,460)
 
Closing water storage  228,981 191,608 187,192 185,138 179,576 178,893
 
 
Change in water liability
Surface water liability (133)  16 (290) 315 (123) (115)
Allocation remaining: individual users (133) 16 (290) 315 (123) (115)
 
Groundwater liability 12,485 11,989 (1,501) 888 31,484 (14,111)
Allocation remaining: individual users 12,485 11,989 (1,501) 888 31,484 (14,111)
Total change in water liability 12,352 12,005 (1,791) 1,203 31,361 (14,226)
             
Net change in water assets 25,021 (7,589) 3,845 4,359 (30,678) (5,234)

* between-store flows

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