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Burdekin: 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 decreased during 2022-23.
  • This decrease represents the change in water volume in the region's surface water storages.

Schematic representation of the Burdekin region. Total water inflows during 2022–23 was 12,941 GL. Total water outflows was 14,433 GL. Water storage at 30 June 2023 was 145 GL less 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 11,904,922 6,261,091 10,612,475 2,742,522 22,045,410 7,854,251
Precipitation on storages 241,958 149,493 136,589 103,254 143,045 85,763
Precipitation on rivers 261,533 148,604 161,692 71,175 264,358 66,420
Runoff 11,103,651 5,840,997 10,083,280 2,538,601 21,264,879 7,553,950
Flood return 297,780 121,997 230,914 29,492 373,129 148,118
 
Groundwater inflows 1,035,981 193,604 177,380 219,283 184,150 142,028
Recharge from surface water* 841,981 704,886 738,795 579,687 812,759 626,295
Managed aquifer recharge of individuals 194,000 193,604 177,380 219,283 184,150 71,802
Other groundwater increases - - - - - 70,226
 
Total water inflows 12,940,903 6,454,695 10,789,855 2,961,805 22,229,560 7,996,279
Water outflows
Surface water outflows 14,326,427 7,850,209 11,459,576 4,743,447 22,643,314 8,346,405
Evaporation on storages 510,842 473,456 452,903 504,477 373,607 443,551
Evaporation on rivers 288,617 211,357 232,249 164,703 231,722 175,352
Outflow to sea 11,434,593 5,505,992 8,938,735 2,609,208 19,834,077 6,030,245
Overbank flow 539,654 244,381 397,902 81,345 706,001 273,301
Recharge to groundwater* 841,981 704,886 738,795 579,687 812,759 626,295
Non-allocated diversion to individual users - - 158,039 158,039 160,240 165,620
Non-allocated diversion to stock and domestic 28,810 28,426 - - - -
Non-allocated diversion to irrigation users 30 29 - - - -
Non-allocated diversion to other users 150,000 149,811 - - - -
Allocated diversion to individual users - - 97,381 103,338 67,018 74,905
Allocated diversion to irrigation users 500,000 500,540 429,153 520,330 440,911 517,544
Allocated diversion to industrial users 17,400 16,876 - - - -
Allocated diversion to urban users 1450 1,413 1,880 2,212 1,274 13,812
Allocated diversion to other users 350 342 - - - -
Allocated diversion to inter-region supply 12,700 12,700 12,539 20,108 15,705 25,780
 
Groundwater outflows 106,244 106,635 148,028 147,521 136,748 112,866
Non-allocated extraction to individual users - - 148,028 147,521 136,748 112,866
Non-allocated extraction to irrigation users 103,335 103,720 - - - -
Non-allocated extraction to commercial users 100 104 - - - -
Non-allocated extraction to industrial users 675 679 - - - -
Non-allocated extraction to stock and domestic 650 648 - - - -
Non-allocated extraction to urban users 564 564 - - - -
Non-allocated extraction to mining users 560 556 - - - -
Non-allocated extraction to other users 360 364 - - - -
Other groundwater decreases - - - - - -
 
Total water outflows 14,432,671 7,956,844 11,607,604 4,890,968 22,780,062 8,459,271
 
Unaccounted-for difference 1,346,792 1,543,999 851,720 1,835,042 766,419 376,883
 
 
Change in water storage            
Change in surface water storage (144,967) 41,850 75,874 (129,254) 103,569 (58,807)
Change in groundwater storage 0 0 (41,903) 35,133 112,348 (27,302)
Total change in water storage (144,976) 41,850 33,971 (94,121) 215,977 (86,109)
 
Closing water storage 2,015,159 2,160,135 2,118,285 2,084,314 2,178,435 1,962,518
 
 
Change in water liability
Surface water liability 0 (159,976) 51,825 (11,662) 45,729 15,260
Surface water carryover 0 (159,976) 51,825 (11,662) 45,729 15,260
 
Groundwater liability 0 0 0 0 0 0
Total change in water liability 0 (159,976) 51,825 (11,662) 45,729 15,260
             
Net change in water assets (144,976) 201,826 (17,854) (82,459) 170,188 (101,369)

* between-store flows

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