South East Queensland: Statement of Water Flows
for the year ended 30 June 2019
- The volume of water in the region's storages decreased during 2018–19 by 22% from last year.
- This decrease represents the change in water volume in the region's surface water storages.
The Statement of Water Flows is provided below and presents the actual water flows associated with the region's water stores during the year, including flows corresponding to the accrual transactions shown in the Statement of Changes in Water Assets and Water Liabilities.
Select comparative year
| 2019 ML | 2018 ML | 2017 ML | 2016 ML | 2015 ML | 2014 ML | |
|---|---|---|---|---|---|---|
| Water inflows | ||||||
| Surface water inflows | 1,100,260 | 2,900,626 | 3,705,973 | 1,889,976 | 5,950,183 | 1,865,479 |
| Precipitation | 152,890 | 225,027 | 210,893 | 158,532 | 222,760 | 143,512 |
| Runoff | 914,938 | 2,536,423 | 3,348,925 | 1,710,726 | 5,684,517 | 1,699,479 |
| Overbank flood return | 18,274 | 121,121 | 128,834 | – | – | – |
| Discharge: user | 2,191 | 3,090 | 2,455 | 9,287 | 4,963 | 4,934 |
| Discharge: wastewater* | 11,967 | 14,965 | 14,866 | 11,431 | 37,943 | 17,554 |
| Groundwater inflows | 26,414 | 26,654 | 25,416 | 25,513 | 22,256 | 20,021 |
| Leakage: urban system* | 26,414 | 26,654 | 25,416 | 25,513 | 22,256 | 20,021 |
| Urban water system inflows | 615,136 | 606,430 | 593,036 | 545,851 | 537,557 | 469,218 |
| Non-allocated diversion: surface water* | 3,727 | **4,394 | 3,567 | 3,531 | 3,355 | 3,787 |
| Non-allocated extraction: groundwater* | 6,688 | 7,396 | 7,868 | 8,301 | 7,449 | 182 |
| Wastewater collected | 252,109 | 270,874 | 251,070 | 245,085 | 240,562 | 207,971 |
| Delivery: inter-region | 14 | 14 | 55 | 0 | 0 | 20,007 |
| Delivery: desalinated water | 6,438 | 2,803 | 1,562 | 1,524 | 1,161 | 1,435 |
| Allocated diversion: surface water* | 346,160 | 320,949 | 328,914 | 287,410 | 285,030 | 235,836 |
| Total water inflows | 1,741,810 | 3,533,710 | 4,324,425 | 2,461,340 | 6,509,996 | 2,354,718 |
| Water outflows | ||||||
| Surface water outflows | 1,589,473 | 2,532,042 | 3,813,172 | 2,226,819 | 5,331,609 | 1,735,534 |
| Evaporation | 329,224 | 334,217 | 335,758 | 331,582 | 333,409 | 286,303 |
| Outflow | 608,366 | 1,471,058 | 2,720,953 | 1,306,764 | 4,375,641 | 904,491 |
| Leakage: landscape | 212,238 | 215,266 | 227,536 | 265,018 | 264,126 | 279,567 |
| Overbank flood spilling | 54,533 | 163,751 | 168,727 | – | – | – |
| Diversions: statutory rights | 3,810 | 3,808 | 3,794 | 3,810 | 3,812 | 3,670 |
| Non-allocated diversion: individual users | 1,312 | 1,318 | 1,323 | 1,316 | 1,294 | 9,152 |
| Non-allocated diversion: urban system* | 3,727 | **4,394 | 3,567 | 3,531 | 3,355 | 3,787 |
| Allocated diversion: individual users | 30,103 | 17,281 | 22,600 | 27,388 | 57,124 | 5,986 |
| Allocated diversion: urban system* | 346,160 | 320,949 | 328,914 | 287,410 | 285,030 | 235,836 |
| Other surface water decreases | 0 | 0 | 0 | 0 | 7,818 | 6,742 |
| Groundwater outflows | 24,030 | 19,788 | 17,515 | 17,770 | 14,191 | 7,516 |
| Non-allocated extraction: individual users | 6,437 | 6,420 | 4,109 | 4,951 | 3,779 | 3,994 |
| Non-allocated extraction: urban system* | 6,688 | 7,396 | 7,868 | 8,301 | 7,449 | 182 |
| Allocated extraction: individual users | 10,905 | 5,972 | 5,538 | 4,518 | 2,963 | 3,340 |
| Urban water system outflows | 596,101 | 609,162 | 601,208 | 544,880 | 549,739 | 472,074 |
| Leakage: groundwater* | 26,414 | 26,654 | 25,416 | 25,513 | 22,256 | 20,021 |
| Supply system delivery: urban users | 342,461 | 302,491 | 313,447 | 264,097 | 262,394 | 239,298 |
| Recycled water delivery: irrigation users | 93 | 88 | 104 | 0 | 0 | 0 |
| Discharge: sea | 185,447 | 236,589 | 213,598 | 208,648 | 208,008 | 162,979 |
| Discharge: landscape | 3,267 | 3,307 | 1,189 | 2,581 | 901 | 1,468 |
| Supply system inter-region transfer | 0 | 0 | 82 | 0 | 0 | 10 |
| Other supply system decreases | 10,281 | 11,268 | 11,242 | 9,141 | 3,371 | 3,306 |
| Recycled water delivery: urban users | 15,582 | 13,083 | 19,478 | 21,193 | 14,866 | 24,141 |
| Discharge: surface water* | 11,967 | 14,965 | 14,866 | 11,431 | 37,943 | 17,554 |
| Other wastewater and recycled water system decreases | 589 | 717 | 1,237 | 2,276 | 0 | 187 |
| Wastewater inter-region transfer | 0 | 0 | 549 | 0 | 0 | 3,110 |
| Total water outflows | 2,209,604 | 3,160,992 | 4,431,895 | 2,789,469 | 5,895,539 | 2,215,124 |
| Unaccounted-for difference | 1,097 | (278,305) | (72,055) | (22,879) | (369,276) | **(372,303) |
| Water storage | ||||||
| Surface water storage | 1,661,528 | 2,128,225 | 2,033,812 | 2,213,337 | 2,564,345 | 2,320,939 |
| Opening surface water storage | 2,128,225 | 2,033,812 | 2,213,337 | 2,564,345 | 2,320,939 | 2,553,648 |
| Change in surface water storage | (466,697) | 94,413 | (179,525) | (351,008) | 243,406 | (232,709) |
| Closing surface water storage | 1,661,528 | 2,128,225 | 2,033,812 | 2,213,337 | 2,564,345 | 2,320,939 |
| Groundwater storage | 11,115 | 11,115 | 11,115 | 11,115 | 11,115 | 9,340 |
| Opening groundwater storage | 11,115 | 11,115 | 11,115 | 11,115 | 9,340 | 9,340 |
| Change in groundwater storage | 0 | 0 | 0 | 0 | 1,775 | 0 |
| Closing groundwater storage | 11,115 | 11,115 | 11,115 | 11,115 | 11,115 | 9,340 |
| Total closing water storage | 1,672,643 | 2,139,340 | 2,044,927 | 2,224,452 | 2,575,460 | 2,330,279 |
* between-store flows
** different to published volume in historical accounts (see Governance section for more information)