Daly: 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 decreased during 2021–22.
- This decrease mainly represents the change in water volume in the region's aquifers.
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
| 2022 ML | 2021 ML | 2020 ML | 2019 ML | 2018 ML | 2017 ML | |
|---|---|---|---|---|---|---|
| Water inflows | ||||||
| Surface water inflows | 5,686,074 | 11,197,787 | 2,123,430 | 2,289,906 | 10,319,822 | 12,058,199 |
| Precipitation on rivers | 69,283 | 133,938 | 32,403 | 37,248 | 112,038 | 140,514 |
| Discharge from groundwater* | 744,320 | 550,010 | 608,120 | 740,000 | 842,000 | 787,000 |
| Runoff | 4,777,383 | 10,291,729 | 1,479,227 | 1,452,952 | 9,031,268 | 10,822,214 |
| Flood return | 95,088 | 221,990 | 3,560 | 59,586 | 334,396 | 308,351 |
| Discharge from wastewater | 0 | 120 | 120 | 120 | 120 | 120 |
| Groundwater inflows | 285,100 | 853,710 | 111,380 | 135,000 | 406,000 | 1,326,000 |
| Inter-region inflow | 10,000 | 10,000 | 10,000 | 10,000 | 10,000 | 10,000 |
| Recharge from landscape | 272,710 | 787,940 | 93,580 | 120,000 | 370,000 | 1,273,000 |
| Recharge from surface water* | 2,390 | 55,770 | 7,800 | 5,000 | 26,000 | 43,000 |
| Total water inflows | 5,971,174 | 12,051,497 | 2,234,810 | 2,424,906 | 10,725,822 | 13,384,199 |
| Water outflows | ||||||
| Surface water outflows | 4,181,519 | 10,375,283 | 2,364,924 | 1,981,897 | 12,046,196 | 11,662,835 |
| Evaporation from rivers | 79,159 | 103,668 | 55,793 | 65,569 | 98,725 | 112,082 |
| River outflow | 3,958,254 | 9,656,204 | 2,274,015 | 1,902,867 | 11,362,405 | 10,886,062 |
| Recharge to groundwater* | 2,390 | 55,770 | 7,800 | 5,000 | 26,000 | 43,000 |
| Overbank flow | 132,335 | 550,619 | 18,046 | 0 | 549,818 | 612,897 |
| Diversion of statutory rights | 5,369 | 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 | 970 | 600 | 769 | 701 | 901 | 684 |
| Allocated diversion to industry users | 105 | 80 | 75 | 133 | 72 | 117 |
| Allocated diversion to urban system | 2,541 | 2,793 | 2,877 | 2,078 | 2,726 | 2,444 |
| Allocated diversion to mining users | 0 | 0 | 0 | 0 | 0 | 0 |
| Allocated diversion to cultural users | 216 | - | - | - | - | - |
| Groundwater outflows | 794,914 | 591,579 | 661,009 | 778,945 | 880,716 | 823,084 |
| Inter-region outflow | - | - | - | - | - | - |
| Discharge to landscape | - | - | - | - | - | - |
| Discharge to surface water* | 744,320 | 550,010 | 608,120 | 740,000 | 842,000 | 787,000 |
| Extraction of statutory rights | 4,280 | 4,280 | 4,280 | 4,280 | 4,280 | 4,280 |
| Allocated extraction to agriculture users | 44,293 | 36,142 | 47,320 | 33,833 | 33,232 | 30,630 |
| Allocated extraction to cultural users | 1,160 | 456 | 535 | 126 | - | 29 |
| Allocated extraction to industry users | 310 | 293 | 377 | 423 | 925 | 385 |
| Allocated extraction to stock and domestic users | 0 | 0 | 0 | 0 | 0 | 0 |
| Allocated extraction to urban system | 465 | 398 | 377 | 283 | 279 | 760 |
| Allocated extraction to mining users | 86 | - | - | - | - | - |
| Total water outflows | 4,976,433 | 10,966,862 | 3,025,933 | 2,760,842 | 12,926,912 | 12,485,919 |
| Unaccounted-for difference | (999,663) | (1,078,833) | 789,553 | 330,473 | 2,199,405 | (894,168) |
| Change in water storage | (4,922) | 5,802 | (1,570) | (5,463) | (1,685) | 4,112 |
| Closing surface water storage | 8,616 | 13,538 | 7,736 | 9,306 | 14,769 | 16,454 |
| Closing groundwater storage | - | - | - | - | - | - |
| Total change in water storage | (4,922) | 5,802 | (1,570) | (5,463) | (1,685) | 4,112 |
| Closing water storage | 8,616 | 13,538 | 7,736 | 9,306 | 14,769 | 16,454 |
| 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 | (4,922) | 5,802 | (1,570) | (5,463) | (1,685) | 4,112 |
* between-store flows
Note: quantification approaches used to derive each item volume are provided in the Methods