South East Queensland: Statement of Changes in Water Assets and Water Liabilities
for the year ended 30 June 2018
- Water availability increased by approximately 5% during the 2017–18 year. This follows decreases in water availability for the previous two years.
- 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 | 2,900,626 | 3,705,973 | 1,889,976 | 5,950,183 | 1,865,479 | 7,487,411 |
| Precipitation | 225,027 | 210,893 | 158,532 | 222,760 | 143,512 | 260,505 |
| Runoff | 2,536,423 | 3,348,925 | 1,710,726 | 5,684,517 | 1,699,479 | 7,182,219 |
| Overbank flood return | 121,121 | 128,834 | – | – | – | – |
| Discharge: user | 3,090 | 2,455 | 9,287 | 4,963 | 4,934 | 5,274 |
| Discharge: wastewater* | 14,965 | 14,866 | 11,431 | 37,943 | 17,554 | 0 |
| Groundwater increases | 26,654 | 25,416 | 25,513 | 22,256 | 20,021 | 27,859 |
| Leakage: urban system* | 26,654 | 25,416 | 25,513 | 22,256 | 20,021 | 27,859 |
| Urban water system increases | 775,570 | 748,051 | 753,374 | 758,758 | 676,223 | 718,328 |
| Non-allocated diversion: surface water* | 10,366 | 3,567 | 3,531 | 3,355 | 3,787 | 3,357 |
| Non-allocated diversion: groundwater* | 7,396 | 7,868 | 8,301 | 7,449 | 182 | 158 |
| Wastewater collected | 270,874 | 251,070 | 245,085 | 240,562 | 207,971 | 244,668 |
| Delivery: inter-region | 14 | 55 | 0 | 0 | 20,007 | 24,514 |
| Delivery: desalinated water | 2,803 | 1,562 | 1,524 | 1,161 | 1,435 | 2,805 |
| Claims: surface water* | 484,117 | 483,929 | 494,933 | 506,231 | 442,841 | 442,826 |
| Total water asset increases | 3,702,850 | 4,479,440 | 2,668,863 | 6,731,197 | 2,561,723 | 8,233,598 |
| Water liability decreases | ||||||
| Surface water liability decreases | 206,856 | 193,937 | 243,799 | 235,541 | 286,466 | 289,081 |
| Adjustment and forfeiture: individual users | 43,688 | 38,922 | 36,276 | 14,340 | 79,461 | 67,318 |
| Adjustment and forfeiture: urban system* | 163,168 | 155,015 | 207,523 | 221,201 | 207,005 | 221,763 |
| Groundwater liability decreases | 5,143 | 5,577 | 6,597 | 8,152 | 5,995 | 7,262 |
| Adjustment and forfeiture: individual users | 5,143 | **5,577 | **6,597 | **8,152 | 5,995 | 7,262 |
| Total water liability decreases | 211,999 | 199,514 | 250,396 | 243,693 | 292,461 | 296,343 |
| Water asset decreases | ||||||
| Surface water decreases | 2,199,784 | 3,461,658 | 1,912,021 | 4,989,455 | 1,493,712 | 7,716,042 |
| Evaporation | 334,217 | 335,758 | 331,582 | 333,409 | 286,303 | 279,163 |
| Outflow | 1,471,058 | 2,720,953 | 1,306,764 | 4,375,641 | 904,491 | 7,154,690 |
| Leakage: landscape | 215,266 | 227,536 | 265,018 | 264,126 | 279,567 | 259,661 |
| Overbank flood spilling | 163,751 | 168,727 | – | – | – | – |
| Diversions: statutory rights | 3,808 | 3,794 | 3,810 | 3,812 | 3,670 | 3,628 |
| Non-allocated diversion: individual users | 1,318 | 1,323 | 1,316 | 1,294 | 9,152 | 9,035 |
| Non-allocated diversion: urban system* | 10,366 | 3,567 | 3,531 | 3,355 | 3,787 | 3,357 |
| Groundwater decreases | 13,816 | 11,977 | 13,252 | 11,228 | 4,176 | 3,222 |
| Non-allocated extraction: individual users | 6,420 | 4,109 | 4,951 | 3,779 | 3,994 | 3,064 |
| Non-allocated extraction: urban system* | 7,396 | 7,868 | 8,301 | 7,449 | 182 | 158 |
| Urban water system decreases | 772,330 | 756,223 | 752,403 | 770,940 | 679,342 | 718,420 |
| Leakage: groundwater* | 26,654 | 25,416 | 25,513 | 22,256 | 20,021 | 27,859 |
| Supply system delivery: urban users | 302,491 | 313,447 | 264,097 | 262,394 | 239,298 | 236,941 |
| Recycled water delivery: irrigation users | 88 | 104 | 0 | 0 | 0 | 0 |
| Discharge: sea | 236,589 | 213,598 | 208,648 | 208,008 | 162,979 | 183,894 |
| Discharge: landscape | 3,307 | 1,189 | 2,581 | 901 | 1,468 | 892 |
| Supply system inter-region transfer | 0 | 82 | 0 | 0 | 10 | 419 |
| Claims: surface water* | 163,168 | 155,015 | 207,523 | 221,201 | 207,005 | 221,763 |
| Other supply system decreases | 11,268 | 11,242 | 9,141 | 3,371 | 3,306 | 7,239 |
| Recycled water delivery: urban users | 13,083 | 19,478 | 21,193 | 14,866 | 24,141 | 0 |
| Discharge: surface water* | 14,965 | 14,866 | 11,431 | 37,943 | 17,554 | 0 |
| Other wastewater and recycled water system decreases | 717 | 1,237 | 2,276 | 0 | 187 | 0 |
| Wastewater inter-region transfer | 0 | 549 | 0 | 0 | 3,110 | 0 |
| Total water asset decreases | 2,985,930 | 4,229,858 | 2,677,676 | 5,771,623 | 2,177,230 | 8,437,684 |
| Water liability decreases | ||||||
| Surface water liability increases | 545,086 | 545,451 | 558,597 | 577,695 | 516,135 | 516,130 |
| Allocation: individual users | 60,969 | 61,522 | 63,664 | 71,464 | 73,294 | 73,304 |
| Allocation: urban system* | 484,117 | 483,929 | 494,933 | 506,231 | 442,841 | 442,826 |
| Groundwater liability increases | 11,115 | 11,115 | 11,115 | 11,115 | 9,335 | 9,340 |
| Allocation: individual users | 11,115 | **11,115 | **11,115 | **11,115 | 9,335 | 9,340 |
| Total water liability increases | 556,201 | 556,566 | 569,712 | 588,810 | 525,470 | 525,470 |
| Unaccounted-for difference | (278,305) | (72,055) | (22,879) | (369,276) | **(372,040) | **507,190 |
| Change in net water assets | ||||||
| Change in net surface water assets | 94,413 | (179,525) | (351,008) | 243,406 | (220,556) | 73,977 |
| Change in net groundwater assets | 0 | 0 | 0 | 1,775 | 0 | 0 |
| Total change in net water assets | 94,413 | (179,525) | (351,008) | 245,181 | (224,705) | 75,284 |
* between-store flows
** different to published volume in historical accounts (see Governance section for more information)