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Burdekin: Statement of Changes in Water Assets and Water Liabilities

for the year ended 30 June 2021

  • The volume of water in the region's storages increased during 2020–21.
  • This increase represents the change in water volume in the region's surface water storages.

Schematic representation of the Burdekin region. Total water inflows during 2020–21 was 10,732 GL. Total water outflows was 10,863 GL. Water storage at 30 June 2021 was 32 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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  2021 ML 2020 ML 2019 ML 2018 ML 2017 ML 2016 ML
Water inflows
Surface water inflows 10,554,300 2,778,576 20,435,828 8,220,593 7,988,689 3,442,916
Precipitation 306,692 174,053 469,805 168,895 354,510 85,153
Runoff 10,013,883 2,576,022 19,585,882 7,912,603 7,582,453 3,357,763
Flood return 233,725 28,501 380,141 139,095 51,726 –
 
Groundwater inflows 177,380 219,283 184,150 142,028 99,104 112,483
Managed aquifer recharge: individual users 177,380 219,283 184,150 71,802 99,104 98,220
Other groundwater increases 0 0 0 70,226 0 14,263
 
Total water inflows 10,731,680 2,997,859 20,619,978 8,362,621 8,087,793 3,555,399
Water outflows
Surface water outflows 10,686,474 4,116,781 21,802,608 7,571,605 5,989,199 2,846,619
Evaporation 744,165 657,370 716,345 655,354 481,524 351,723
Outflow 8,842,426 2,576,284 19,708,475 5,877,268 4,629,655 1,652,935
Overbank flow 400,891 79,100 692,640 241,322 117,318 –
Non-allocated diversion: individual users 158,039 158,039 160,240 165,620 172,705 158,744
Allocated diversion: individual users 97,381 103,338 67,018 74,905 106,586 134,177
Allocated diversion: urban system 1,880 2,212 1,274 13,812 8,604 2,263
Allocated diversion: irrigation scheme 429,153 520,330 440,911 517,544 460,969 533,681
Allocated diversion: inter-region 12,539 20,108 15,705 25,780 11,838 13,096
 
Groundwater outflows 176,880 206,866 168,302 156,681 81,606 80,433
Non-allocated extraction: individual users 148,028 147,521 136,748 112,866 53,378 51,999
Allocated extraction: individual users 295 1,465 704 871 1,082 28,434
Allocated extraction: urban system – 149 280 287 238 –
Allocated extraction: irrigation scheme 28,557 57,731 30,570 42,657 17,672 –
Other 0 0 0 0 9,236 –
 
Total water outflows 10,863,354 4,323,647 21,970,910 7,728,286 6,070,805 2,927,052
Unaccounted-for difference 163,840 1,244,316 1,475,496 (620,406) (1,951,150) (222,311)
 
 
Change in water storage            
Change in surface water storage 64,167 (119,577) 105,028 (56,297) 75,074 391,773
Change in groundwater storage (32,001) 38,105 19,536 70,226 (9,236) 14,263
Total change in water storage 32,166 (81,472) 124,564 13,929 65,838 406,036
 
Closing water storage 2,134,063 2,101,897 2,183,369 2,058,805 2,044,876 1,979,038
 
 
Change in water liability
Surface water liability 51,825 (11,662) 45,729 13,927 59,337 (42,925)
Allocation remaining: individual users 0 0 0 (1,333) 513 (2,835)
Allocation remaining: urban system 0 0 0 0 0 0
Allocation remaining: irrigation scheme 51,825 (11,662) 45,729 15,260 58,824 (40,090)
Allocation remaining: inter-region transfer 0 0 0 0 0 0
 
Groundwater liability 0 0 0 0 0 0
Allocation remaining: individual users 0 0 0 0 0 0
Allocation remaining: urban system 0 0 0 0 0 0
Allocation remaining: irrigation scheme 0 0 0 0 0 0
Total change in water liability 51,825 (11,662) 45,729 13,927 59,337 (42,925)
             
Net change in water assets (19,659) (69,810) 78,835 2 6,501 448,961
 

 

* different to published volume in historical accounts (see Governance for more information)

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