Melbourne: Statement of Water Flows
The Statement of Water Flows presents the actual water inflows and outflows associated with the water stores of the region that occurred during the reporting year.
Figure W3 shows the actual water flows, including flows corresponding to the accrual transactions shown in Figure W2 in the Statement of Changes of Water Assets and Water Liabilities.
Figure W3 Water flows for the region during the 2014–15 year
More detail on the water flows for the 2014–15 year is provided in the Statement of Water Flows below.
Items in the statements are hyperlinked to the associated section of the Supporting information notes. Methods used to derive item volumes are provided in the Quantification approaches notes.
for the year ended 30 June 2015
| 2015 ML | 2014 ML | |
|---|---|---|
| Water inflows | ||
| Surface water inflows | 1,286,846 | 1,942,095 |
| Precipitation | 31,431 | 39,796 |
| Runoff | 1,105,096 | 1,768,154 |
| Point return: irrigation | 121 | 61 |
| Discharge: user | – | – |
| Delivery: inter-region agreement | 150,198 | 134,084 |
| Delivery: desalinated water | 0 | 0 |
| Total surface water inflows | 1,286,846 | 1,942,095 |
| Groundwater inflows | 321,614 | 368,823 |
| Inter-region inflow | 0 | 0 |
| Inter-region coastal inflow | 33,665 | 30,504 |
| Recharge: landscape | 287,949 | 338,319 |
| Total groundwater inflows | 321,614 | 368,823 |
| Urban water system inflows | 336,882 | 350,537 |
| Wastewater collected | 336,494 | 350,537 |
| Delivery: inter-region | 388 | – |
| Other increases | 0 | 0 |
| Total urban water system inflows | 336,882 | 350,537 |
| Total water inflows | 1,945,342 | 2,661,455 |
| Water outflows | ||
| Surface water outflows | 933,260 | 1,345,225 |
| Evaporation | 54,829 | 44,132 |
| Outflow | 854,717 | 1,274,041 |
| Diversion: statutory rights | – | – |
| Non-allocated diversion: individual users | 12,550 | 13,682 |
| Allocated diversion: individual users | 8,058 | 9,844 |
| Transfer: inter-region | 3,106 | 3,526 |
| Total surface water outflows | 933,260 | 1,345,225 |
| Groundwater outflows | 169,675 | 162,024 |
| Inter-region outflow | 0 | 0 |
| Inter-region coastal outflow | 139,716 | 137,638 |
| Discharge: landscape | 10,918 | 10,074 |
| Extractions: statutory rights | – | – |
| Non-allocated extraction: individual users | – | – |
| Allocated extractions: individual users | 19,041 | 14,312 |
| Total groundwater outflows | 169,675 | 162,024 |
| Urban water system outflows | 697,115 | 701,419 |
| Evaporation | 15,896 | 15657 |
| Leakage: landscape | 5,013 | 4,311 |
| Delivery: urban users | 368,451 | 363,157 |
| Discharge: irrigation | 7,567 | 5,769 |
| Discharge: sea | 261,293 | 275,538 |
| Discharge: other | 131 | 0 |
| Supply system transfer: inter-region | 247 | 351 |
| Other supply system decreases | 15,745 | 14,397 |
| Recycled water delivery: urban users | 22,634 | 22,072 |
| Other wastewater decreases | 71 | 55 |
| Supply system delivery: irrigation | 67 | 112 |
| Total urban water system outflows | 697,115 | 701,419 |
| Total water outflows | 1,800,050 | 2,208,668 |
| Unaccounted-for difference | ||
| Unaccounted-for difference | 206,214 | 453,231 |
| Unaccounted-for difference | 206,214 | 453,231 |
| Total unaccounted-for difference | 206,214 | 453,231 |
| Total unaccounted-for difference | 206,214 | 453,231 |
| Opening water storage | 650,286 | 650,730 |
| Change in water storage | (60,922) | (444) |
| Closing water storage | 589,364 | 650,286 |