Adelaide: Statement of Changes in Water Assets and Water Liabilities
for the year ended 30 June 2018
- Water availability decreased by about 10% during 2017–18, which follows a similar decrease in water availability from the previous year.
- The change in water available is represented by the change in net water assets.
The Statement of Changes in Water Assets and Water Liabilities is provided in the table below. The statement presents the changes in water assets and water liabilities that occurred during the year, including accrual transactions (e.g. allocations and forfeitures) and actual water flows, both natural and engineered.
Select comparative year
| 2018 ML | 2017 ML | 2016 ML | 2015 ML | 2014 ML | 2013 ML | |
|---|---|---|---|---|---|---|
| Water asset increases | ||||||
| Surface water increases | 472,722 | 1,029,075 | 396,661 | 448,537 | 666,330 | 497,591 |
| Precipitation | 12,015 | 14,381 | 7,329 | 7,096 | 11,209 | 6,783 |
| Runoff | 200,858 | 810,773 | 170,411 | 237,520 | 448,723 | 286,463 |
| Discharge: groundwater* | 73,921 | 73,921 | 73,921 | 73,921 | 74,012 | 72,148 |
| Discharge: wastewater | – | – | – | – | **2,386 | **2,197 |
| Flood return | 55,928 | – | – | – | – | – |
| Claims: inter-region | 130,000 | 130,000 | 145,000 | 130,000 | 130,000 | 130,000 |
| Groundwater increases | 93,825 | 125,638 | 121,144 | 432,444 | 544,923 | 392,662 |
| Inter-region inflow | 53 | 60 | 20 | 27 | 21 | 31 |
| Inter-region coastal inflow | 1,353 | 1,085 | 1,300 | 1,603 | 1,624 | 1,562 |
| Recharge: landscape | 76,966 | 109,055 | 100,839 | 408,445 | 526,777 | 373,428 |
| Leakage: urban* | 11,941 | 14,130 | 15,456 | 18,085 | 15,309 | 16,529 |
| Managed aquifer recharge: individual users | 3,215 | 964 | 3,205 | 3,186 | 0 | 0 |
| Managed aquifer recharge: urban* | 297 | 344 | 324 | 210 | 61 | 133 |
| Urban water system increases | 299,455 | 269,774 | 374,378 | 317,131 | 326,136 | 270,515 |
| Non-allocated diversion: surface water* | 51,339 | 15,478 | 128,010 | 56,943 | **26,626 | – |
| Wastewater collected | 100,803 | 107,139 | 95,637 | **91,945 | 95,560 | 91,043 |
| Delivery: desalinated water | 4,268 | 4,112 | 7,686 | 22,725 | 60,950 | 36,472 |
| Claims: surface water* | 143,045 | 143,045 | 143,045 | 143,000 | 143,000 | 143,000 |
| Irrigation scheme increases | 40,119 | 20,949 | 31,139 | 29,492 | 25,649 | 30,150 |
| Delivery: recycled water* | 20,392 | 14,441 | 21,194 | 21,024 | 18,684 | 21,586 |
| Non-allocated extraction: groundwater* | 200 | 200 | 310 | 210 | 61 | 112 |
| Claims: inter-region | 8,977 | 5,740 | 9,037 | 7,674 | 6,294 | 7,852 |
| Other increases | 10,550 | 568 | 598 | 584 | 610 | 600 |
| Total water asset increases | 906,121 | 1,445,436 | 923,322 | 1,218,965 | 1,567,067 | 1,190,918 |
| Water liability decreases | ||||||
| Surface water liability decreases | 49,133 | 22,441 | 126,863 | 70,500 | 79,535 | 87,929 |
| Adjustment and forfeiture: individual users | 12,058 | 7,496 | 4,926 | 5,700 | 2,634 | 2,210 |
| Adjustment and forfeiture: urban* | 37,075 | 14,945 | 121,937 | 64,800 | 76,901 | 85,719 |
| Groundwater liability decreases | 55,913 | 45,843 | 45,844 | 50,693 | 21,758 | 23,515 |
| Adjustment and forfeiture: individual users | 55,913 | 45,843 | 45,844 | 50,693 | 21,758 | **23,515 |
| Total water liability decreases | 105,046 | 68,284 | 172,707 | 121,193 | 101,293 | 111,444 |
| Water asset decreases | ||||||
| Surface water decreases | 384,599 | 588,990 | 218,581 | 254,189 | 316,224 | 178,769 |
| Evaporation | 21,672 | 19,488 | 15,705 | 24,651 | 16,954 | 14,741 |
| Outflow | 186,053 | 459,018 | 70,010 | 106,422 | 166,640 | 100,442 |
| Other statutory rights | – | – | – | – | 1,738 | 2,006 |
| Recharge: landscape | – | – | – | – | – | – |
| Claims: inter region | 58,932 | 95,006 | 4,856 | 66,173 | 97,851 | **61,580 |
| Overbank flow | 66,603 | – | – | – | – | – |
| Other decreases | – | – | – | – | 6,415 | – |
| Non-allocated diversion: urban system* | 51,339 | 15,478 | 128,010 | **56,943 | **26,626 | – |
| Groundwater decreases | 84,077 | 76,020 | 76,649 | 411,716 | 339,013 | 208,549 |
| Inter-region outflow | 269 | 199 | 378 | 368 | 383 | 510 |
| Inter-region coastal outflow | 1,890 | 1,266 | 932 | 966 | 972 | 842 |
| Discharge: surface water* | 73,921 | 73,921 | 73,921 | 73,921 | 74,012 | 72,148 |
| Discharge: landscape | – | – | – | 335,143 | 243,506 | 108,290 |
| Extraction: statutory rights | 7,797 | 434 | 1,108 | 1,108 | 20,079 | 26,647 |
| Non-allocated extraction: irrigation* | 200 | 200 | 310 | 210 | 61 | 112 |
| Urban water system decreases | 297,485 | 264,676 | 372,815 | 315,938 | 318,818 | 331,353 |
| Supply system delivery: urban users | 141,744 | 123,830 | 134,533 | 136,092 | 132,547 | 141,892 |
| Discharge: sea | 63,033 | 76,769 | 56,381 | 58,462 | 64,399 | 59,264 |
| Supply system transfer: inter-region | 5,854 | 3,793 | 4,771 | **4,417 | 4,150 | 4,053 |
| Other wastewater discharge | 1,439 | 582 | – | – | – | – |
| Other supply system decreases | 2,038 | 1,825 | 2,043 | 1,257 | 1,325 | – |
| Recycled water delivery: urban users | 6,731 | 5,623 | 5,972 | **3,906 | 3,056 | – |
| Recycled water delivery: irrigation* | 20,392 | 14,441 | 21,194 | 21,024 | 18,684 | – |
| Wastewater discharge: surface water* | – | – | – | – | **2,386 | **2,197 |
| Other wastewater decreases | 6,941 | 8,394 | 10,204 | 8,942 | – | – |
| Leakage: groundwater* | 11,941 | 14,130 | 15,456 | 18,085 | 15,309 | 16,529 |
| Managed aquifer recharge* | 297 | 344 | 324 | 210 | 61 | 113 |
| Claims: surface water* | 37,075 | 14,945 | 121,937 | 64,800 | 76,901 | 85,719 |
| Irrigation scheme decreases | 36,029 | 21,936 | 29,073 | 27,383 | 24,222 | 26,656 |
| Claims: inter-region | 4,176 | 57 | 258 | 391 | 73 | 486 |
| Delivery | 31,853 | 21,879 | 28,815 | 26,992 | 24,149 | 26,170 |
| Total water asset decreases | 802,190 | 951,622 | 697,118 | 1,009,226 | 998,217 | 745,327 |
| Water liability increases | ||||||
| Surface water liability increases | 158,328 | 155,704 | 151,704 | 151,629 | 146,631 | 146,417 |
| Allocation: individual users | 15,283 | 12,659 | 8,659 | 8,629 | 3,631 | 3,417 |
| Allocation: urban system* | 143,045 | 143,045 | 143,045 | 143,000 | 143,000 | 143,000 |
| Groundwater liability increases | 95,595 | 98,905 | 103,651 | 102,050 | 47,483 | 48,343 |
| Allocation: individual users | 95,595 | 98,905 | 103,651 | 102,050 | 47,483 | 48,343 |
| Total water liability increases | 253,923 | 254,609 | 255,355 | 253,679 | 194,114 | 194,760 |
| Unaccounted-for difference | 40,394 | (312,234) | (**137,017) | (**115,765) | (**438,731) | (**374,205) |
| Change in net water assets | (4,552) | (4,745) | 6,539 | (29,130) | 33,209 | (11,930) |
| Change in net surface water assets | (18,663) | 7,709 | **8,306 | **(27,916) | **35,375 | **(10,128) |
| Change in net groundwater assets | 14,111 | (12,454) | (1,767) | (1,214) | (2,166) | (1,802) |
| Change in net urban water assets | 0 | 0 | 0 | 0 | 0 | 0 |
| Change in net irrigation scheme water assets | 0 | 0 | 0 | 0 | 0 | 0 |
| Total change in net water assets | (4,552) | (4,745) | 7,001 | (28,936) | 32,955 | (11,930) |
* between-store flows
** different to published volume in historical accounts (see Governance section for more information)