Ord: 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 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
| 2022 ML | 2021 ML | 2020 ML | 2019 ML | 2018 ML | 2017 ML | |
|---|---|---|---|---|---|---|
| Water inflows | ||||||
| Surface water inflows | 3,202,712 | 6,900,954 | 2,782,247 | 1,491,159 | 2,929,648 | 20,300,636 |
| Precipitation on storages | 468,800 | 519,170 | 389,085 | 403,421 | 541,723 | 1,266,289 |
| Precipitation on rivers | 36,937 | 68,986 | 35,557 | 23,681 | 35,867 | 144,689 |
| Runoff | 2,636,692 | 6,215,782 | 2,296,980 | 1,012,307 | 2,297,960 | 18,646,728 |
| Point return from irrigation | 51,000 | 51,000 | 51,000 | 51,000 | 51,000 | 51,000 |
| Flood return | 8,698 | 45,431 | 9,040 | 165 | 2,513 | 191,345 |
| Discharge from wastewater | 585 | 585 | 585 | 585 | 585 | 585 |
| Groundwater inflows | 6,171 | 7,185 | 6,628 | 6,202 | 6,637 | 7,579 |
| Inter-region inflow | – | – | – | – | – | – |
| Groundwater recharge | 6,171 | 7,185 | 6,628 | 6,202 | 6,637 | 7,579 |
| Total water inflows | 3,208,883 | 6,908,139 | 2,788,875 | 1,497,361 | 2,936,285 | 20,308,215 |
| Water outflows | ||||||
| Surface water outflows | 5,434,213 | 5,908,456 | 5,918,790 | 5,127,916 | 6,165,079 | 18,788,511 |
| Evaporation from storages | 1,923,618 | 1,405,260 | 1,471,940 | 1,926,220 | 2,228,217 | 2,165,124 |
| Evaporation from rivers | 90,179 | 96,972 | 82,299 | 80,090 | 87,021 | 137,903 |
| River outflow | 3,135,728 | 4,024,153 | 4,020,758 | 2,813,434 | 3,605,434 | 15,923,052 |
| Leakage to landscape | 80 | 80 | 80 | 80 | 80 | 80 |
| Overbank flow | 35,719 | 110,542 | 34,975 | 1,203 | 17,835 | 377,048 |
| River loss | - | - | - | - | - | - |
| Allocated diversion to agriculture users | 29,057 | 20,224 | 23,764 | 31,335 | 27,746 | 26,537 |
| Allocated diversion to mining users | 3,036 | 2,220 | 2,868 | 2,386 | 2,938 | 4,590 |
| Allocated diversion to stock and domestic users | 248 | 548 | 548 | 543 | 513 | 446 |
| Allocated diversion to parks, gardens and recreation users | 703 | 634 | 634 | 634 | 631 | 628 |
| Allocated diversion to industry users | 13 | - | - | - | - | - |
| Allocated diversion to commercial users | 467 | 329 | 394 | 342 | 473 | 134 |
| Allocated diversion to urban users | 700 | 425 | 425 | 425 | 426 | 406 |
| Allocated diversion to irrigation users | 214,665 | 247,069 | 280,105 | 271,224 | 193,766 | 152,563 |
| Groundwater outflows | 6,171 | 7,185 | 6,628 | 6,202 | 6,637 | 7,579 |
| Inter-region outflows | – | – | – | – | – | – |
| Discharge to landscape | – | – | – | – | – | – |
| Allocated extraction to agriculture users | 248 | 215 | 215 | 293 | 118 | 115 |
| Allocated extraction to mining users | 2,289 | 4,386 | 3,828 | 3,506 | 4,067 | 5,041 |
| Allocated extraction to stock and domestic users | 172 | 178 | 178 | 173 | 172 | 166 |
| Allocated extraction to commercial users | 646 | 597 | 588 | 411 | 461 | 451 |
| Allocated extraction to urban users | 2,700 | 1,778 | 1,778 | 1,778 | 1,778 | 1,760 |
| Allocated extraction to industry users | 56 | – | – | – | – | – |
| Allocated extraction to parks, gardens and recreation users | 60 | 31 | 41 | 41 | 41 | 46 |
| Allocated extraction to other users | – | – | – | – | – | – |
| Total water outflows | 5,440,384 | 5,915,641 | 5,925,418 | 5,134,118 | 6,171,716 | 18,796,090 |
| Unaccounted-for difference | 1,684,751 | 2,864,117 | 1,357,594 | 871,948 | 395,372 | 2,268,308 |
| Change in water storage | ||||||
| Change in surface water storage | (546,750) | 3,856,615 | (1,778,949) | (2,764,809) | (2,840,059) | 3,780,433 |
| Change in groundwater storage | – | – | – | – | – | – |
| Total change in water storage | (546,750) | 3,856,615 | (1,778,949) | (2,764,809) | (2,840,059) | 3,780,433 |
| Closing water storage | 7,614,176 | 8,160,926 | 4,304,311 | 6,083,260 | 8,848,069 | 11,688,128 |
| Change in water liability | ||||||
| Surface water liability | – | 14,385 | 57,620 | (67,768) | (29,675) | 19,288 |
| Surface water carryover | – | 14,385 | 57,620 | (67,768) | (29,675) | 19,288 |
| Groundwater liability | – | – | – | – | (1) | (48) |
| Groundwater carryover | – | – | – | – | (1) | (48) |
| Total change in water liability | – | 14,385 | 57,620 | (67,768) | (29,676) | 19,240 |
| Net change in water assets | (546,750) | 3,842,230 | (1,836,569) | (2,697,041) | (2,810,383) | 3,761,193 |
Note: quantification approaches used to derive each item volume are provided in the Methods