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Daly: 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.
  • This increase mainly represents the change in water volume in the region's aquifers.

Schematic representation of the Daly region. Total water inflows during 2022-23 was 12,090 GL. Total water outflows were 10,614 GL. Change in water storage on 30 June 2023 was 5 GL more 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.

 

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  2023 (ML) 2022 (ML) 2021 (ML) 2020 (ML) 2019 (ML) 2018 (ML)
Water inflows
Surface water inflows 11,807,393 5,681,461 11,205,894 2,123,493 2,289,982 10,319,933
Precipitation on rivers 127,408 69,044 133,978 32,403 37,248 112,038
Precipitation on storages 128 66 109 63 76 111
Discharge from groundwater* 745,000 744,320 550,010 608,120 740,000 842,000
Runoff 10,756,467 4,772,936 10,299,692 1,479,227 1,452,952 9,031,268
Flood return 178,390 95,095 221,985 3,560 59,586 334,396
Discharge from wastewater - - 120 120 120 120
 
Groundwater inflows 282,400 285,100 853,710 111,380 135,000 406,000
Inter-region inflow 10,000 10,000 10,000 10,000 10,000 10,000
Recharge from landscape 270,000 272,710 787,940 93,580 120,000 370,000
Recharge from surface water* 2,400 2,390 55,770 7,800 5,000 26,000
 
Total water inflows 12,089,793 5,966,561 12,059,604 2,234,873 2,424,982 10,725,933
Water outflows
Surface water outflows 9,816,648 4,180,121 10,375,337 2,364,924 1,981,897 12,046,196
Evaporation from rivers 96,228 79,055 103,694 55,793 65,569 98,725
Outflow 9,266,794 3,356,900 9,556,204 2,274,015 1,902,867 11,362,405
Recharge to groundwater* 2,400 2,390 55,770 7,800 5,000 26,000
Overbank flow 441,726 132,395 550,647 18,046 0 549,818
Diversion of statutory rights 5,415 5,369 5,369 5,369 5,369 5,369
Non-allocated diversion to agriculture users 180 180 180 180 180 180
Non-allocated diversion to industry users 0 0 0 0 0 0
Allocated diversion to agriculture users 1,127 970 600 769 701 901
Allocated diversion to industry users 40 105 80 75 133 72
Allocated diversion to urban system 2,068 2,541 2,793 2,877 2,078 2,726
Allocated diversion to mining users 0 0 0 0 0 0
Allocated diversion to cultural users 164 216 0 0 0 0
 
Groundwater outflows 795,300 794,914 591,579 661,009 778,945 880,716
Discharge to landscape - - - - - -
Discharge to surface water* 745,000 744,320 550,010 608,120 740,000 842,000
Extraction of statutory rights 4,280 4,280 4,280 4,280 4,280 4,280
Allocated extraction to agriculture users 46,873 44,293 36,142 47,320 33,232 30,630
Allocated extraction to cultural users 402 1,160 456 535 126 0
Allocated extraction to industry users 300 310 293 377 423 925
Allocated extraction to stock and domestic users 0 0 0 0 0 0
Allocated extraction to urban system 895 465 398 377 283 279
Allocated extraction to mining users 143 86 0 0 0 0
 
Total water outflows 10,614,035 4,975,035 10,966,916 3,025,933 2,760,842 12,926,912 
 
Unaccounted-for difference (1,471,161) (996,090) (1,086,886) 789,490 330,617 2,199,294
 
 
Change in water storage            
Change in surface water storage 4,597 (4,564) 5,802 (1,570) (5,243) (1,685)
Change in groundwater storage - - - - - -
Total change in water storage 4,597 (4,564) 5,802 (1,570) (5,243) (1,685)
 
Closing water storage 13,571 8,974 13,538 7,736 9,306 14,549
 
 
Change in water liability
Surface water liability 0 0 0 0 0 0
Surface water carryover 0 0 0 0 0 0
 
Groundwater liability 0 0 0 0 0 0
Groundwater carryover 0 0 0 0 0 0
Total change in water liability 0 0 0 0 0 0
   
Net change in water assets 4,597 (4,564) 5,802 (1,570) (5,243) (1,685)

* between-store flows

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