Burdekin: Statement of Changes in Water Assets and Water Liabilities
for the year ended 30 June 2020
- The volume of water in the region's storages decreased during 2019–20 for the first time in five years.
- This decrease represents the change in water volume in the region's surface water storages.
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.
Select comparative year
| 2020 ML | 2019 ML | 2018 ML | 2017 ML | 2016 ML | 2015 ML | |
|---|---|---|---|---|---|---|
| Water inflows | ||||||
| Surface water inflows | 2,778,576 | 20,435,828 | 8,220,593 | 7,988,689 | 3,442,916 | 1,730,603 |
| Precipitation | 174,053 | 469,805 | 168,895 | 354,510 | 85,153 | 90,680 |
| Runoff | 2,576,022 | 19,585,882 | 7,912,603 | 7,582,453 | 3,357,763 | 1,639,923 |
| Flood return | 28,501 | 380,141 | 139,095 | 51,726 | – | – |
| Groundwater inflows | 219,283 | 184,150 | 142,028 | 99,104 | 112,483 | 81,673 |
| Managed aquifer recharge: individual users | 219,283 | 184,150 | 71,802 | 99,104 | 98,220 | 81,673 |
| Other groundwater increases | 0 | 0 | 70,226 | 0 | 14,263 | 0 |
| Total water inflows | 2,997,859 | 20,619,978 | 8,362,621 | 8,087,793 | 3,555,399 | 1,812,276 |
| Water outflows | ||||||
| Surface water outflows | 4,116,781 | 21,802,608 | 7,571,605 | 5,989,199 | 2,846,619 | 2,446,226 |
| Evaporation | 657,370 | 716,345 | 655,354 | 481,524 | 351,723 | 504,892 |
| Outflow | 2,576,284 | 19,708,475 | 5,877,268 | 4,629,655 | 1,652,935 | 1,007,196 |
| Overbank flow | 79,100 | 692,640 | 241,322 | 117,318 | – | – |
| Non-allocated diversion: individual users | 158,039 | 160,240 | 165,620 | 172,705 | 158,744 | 115,336 |
| Allocated diversion: individual users | 103,338 | 67,018 | 74,905 | 106,586 | 134,177 | 150,120 |
| Allocated diversion: urban system | 2,212 | 1,274 | 13,812 | 8,604 | 2,263 | 1,957 |
| Allocated diversion: irrigation scheme | 520,330 | 440,911 | 517,544 | 460,969 | 533,681 | 666,725 |
| Allocated diversion: inter-region | 20,108 | 15,705 | 25,780 | 11,838 | 13,096 | – |
| Groundwater outflows | 206,866 | 168,302 | 156,681 | 81,606 | 80,433 | 54,860 |
| Non-allocated extraction: individual users | 147,521 | 136,748 | 112,866 | 53,378 | 51,999 | 37,010 |
| Allocated extraction: individual users | 1,465 | 704 | 871 | 1,082 | 28,434 | 17,850 |
| Allocated extraction: urban system | 149 | 280 | 287 | 238 | – | – |
| Allocated extraction: irrigation scheme | 57,731 | 30,570 | 42,657 | 17,672 | – | – |
| Other | 0 | 0 | 0 | 9,236 | – | – |
| Total water outflows | 4,323,647 | 21,970,910 | 7,728,286 | 6,070,805 | 2,927,052 | 2,501,086 |
| Unaccounted-for difference | 1,244,316 | 1,475,496 | (620,406) | (1,951,150) | (222,311) | 165,172 |
| Change in water storage | ||||||
| Change in surface water storage | (119,577) | 105,028 | (56,297) | 75,074 | 391,773 | (523,638) |
| Change in groundwater storage | 38,105 | 19,536 | 70,226 | (9,236) | 14,263 | 0 |
| Total change in water storage | (81,472) | 124,564 | 13,929 | 65,838 | 406,036 | (523,638) |
| Closing water storage | 2,101,897 | 2,183,369 | 2,058,805 | 2,044,876 | 1,979,038 | 1,573,002 |
| Change in water liability | ||||||
| Surface water liability | (11,662) | 45,729 | 13,927 | 59,337 | (42,925) | (48,457) |
| Allocation remaining: individual users | 0 | 0 | (1,333) | 513 | (2,835) | (88,547) |
| Allocation remaining: urban system | 0 | 0 | 0 | 0 | 0 | 0 |
| Allocation remaining: irrigation scheme | (11,662) | 45,729 | 15,260 | 58,824 | (40,090) | 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 | (11,662) | 45,729 | 13,927 | 59,337 | (42,925) | (48,457) |
| Net change in water assets | (69,810) | 78,835 | 2 | 6,501 | 448,961 | (475,181) |
* 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