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Burdekin: Statement of Changes in Water Assets and Water Liabilities

for the year ended 30 June 2022

  • The volume of water in the region's storages increased during 2021-22.
  • This increase represents the change in surface water inflows into the region's surface water storages.

Schematic representation of the Burdekin region. Total water inflows during 2021–22 was 6,794 GL. Total water outflows was 6,797 GL. Water storage at 30 June 2022 was 42 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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 2022 ML2021 ML2020 ML2019 ML2018 ML2017 ML
Water inflows
Surface water inflows6,600,32410,610,5522,742,52222,045,4117,854,2525,152,460
Precipitation on storages149,718136,589103,254143,04585,764143,335
Precipitation on rivers152,729162,00171,175264,35866,420146,548
Runoff6,175,69410,081,8032,538,60121,264,8797,553,9504,789,668
Flood return122,183230,15929,492373,129148,11872,909
 
Groundwater inflows193,604177,380219,283184,150142,02899,104
Managed aquifer recharge of individuals193,604177,380219,283184,15071,80299,104
Other groundwater increases----70,226-
 
Total water inflows6,793,92810,787,9322,961,80522,229,5617,996,2805,251,564
Water outflows
Surface water outflows6,690,02810,720,8014,163,76021,830,5557,720,1106,094,199
Evaporation on storages473,612452,903504,477373,607443,551490,165
Evaporation on rivers209,346233,214164,703231,722175,352178,151
Outflow5,064,2978,938,8712,609,20819,834,0776,030,2454,518,144
Overbank flow245,336396,82181,345706,001273,301147,037
Non-allocated diversion to individual users-158,039158,039160,240165,620172,705
Non-allocated diversion to stock and domestic28,426-----
Non-allocated diversion to irrigation users29-----
Non-allocated diversion to other users149,811-----
Allocated diversion to individual users-97,381103,33867,01874,905106,586
Allocated diversion to irrigation users500,540429,153520,330440,911517,544460,969
Allocated diversion to industrial users16,876-----
Allocated diversion to urban users1,4131,8802,2121,27413,8128,604
Allocated diversion to other users342-----
Allocated diversion to inter-region supply-12,53920,10815,70525,78011,838
 
Groundwater outflows106,635148,028147,521136,748112,86662,614
Non-allocated extraction to individual users-148,028147,521136,748112,86653,378
Non-allocated extraction to irrigation users103,720-----
Non-allocated extraction to commercial users104-----
Non-allocated extraction to industrial users679-----
Non-allocated extraction to stock and domestic648-----
Non-allocated extraction to urban users564-----
Non-allocated extraction to mining users556-----
Non-allocated extraction to other users364-----
Other groundwater decreases-----9,236
 
Total water outflows6,796,66310,868,8294,311,28121,967,3037,832,9766,156,813
 
Unaccounted-for difference44,408114,8711,255,367(46,359)(249,413)1,011,479
 
 
Change in water storage      
Change in surface water storage41,67375,877(129,242)103,551(58,807)105,346
Change in groundwater storage0(41,903)35,133112,348(27,302)884
Total change in water storage41,67333,974(94,109)215,899(86,109)106,230
 
Closing water storage2,159,9562,118,2832,084,3092,178,4181,962,5192,048,628
 
 
Change in water liability
Surface water liability(159,976)51,825(11,662)45,72915,26058,824
Surface water carryover(159,976)51,825(11,662)45,72915,26058,824
 
Groundwater liability000000
Total change in water liability(159,976)51,825(11,662)45,72915,26058,824
       
Net change in water assets201,649(17,851)(82,447)170,170(101,369)47,406

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