Perth
Statement of Water Flows
Line items in the statements are hyperlinked to the associated section of the Supporting information notes. Methods used to derive line item volumes are provided in the Quantification approaches notes.
for the year ended 30 June 2014
| 2014 ML | 2013 ML | |
|---|---|---|
| Water inflows | ||
| Surface water inflows | 814,691 | 379,660 |
| Precipitation on surface water | 25,009 | 17,978 |
| Runoff to surface water | 787,143 | 359,858 |
| Delivery of water from outside region | 2,539 | 1,824 |
| Total surface water inflows | 814,691 | 379,660 |
| Groundwater inflows | 1,990,720 | 1,243,364 |
| Groundwater inflow from outside region | 52,788 | 48,940 |
| Groundwater inflow from outside region at coast | 0 | 0 |
| Recharge from landscape | 1,937,932 | 1,194,424 |
| Total groundwater inflows | 1,990,720 | 1,243,364 |
| Urban water system inflows | 256,205 | 234,101 |
| Wastewater collected | 141,024 | 136,392 |
| Delivery of water from outside region to urban water system | 2,121 | 1,939 |
| Delivery of desalinated water to urban water system | 113,060 | 95,770 |
| Total urban water system inflows | 256,205 | 234,101 |
| Total water inflows | 3,061,616 | 1,857,125 |
| Water outflows | ||
| Surface water outflows | 623,047 | 265,655 |
| Evaporation from surface water | 33,600 | 28,719 |
| River outflow from the region | 555,390 | 205,977 |
| Surface water leakage to landscape | 196 | 142 |
| River and floodplain leakage, evaporation and errors | – | – |
| Entitled diversion of allocated surface water to users | 33,861 | 30,817 |
| Total surface water outflows | 623,047 | 265,655 |
| Groundwater outflows | 1,441,667 | 1,127,832 |
| Groundwater outflow to outside region | 30,164 | 27,056 |
| Groundwater outflow to outside region at coast | 433,999 | 306,260 |
| Discharge to landscape | 622,737 | 447,397 |
| Entitled extraction of non-allocated groundwater to users | 73,249 | 72,573 |
| Entitled extraction of allocated groundwater to users | 281,518 | 274,546 |
| Total groundwater outflows | 1,441,667 | 1,127,832 |
| Urban water system outflows | 404,603 | 395,452 |
| Evaporation from urban water system | – | 89 |
| Delivery to urban water system users | 242,053 | 232,315 |
| Wastewater discharge outside of region | 124,900 | 120,293 |
| Other wastewater discharge | 5,673 | 5,338 |
| Transfer of water outside of region | 20,797 | 29,010 |
| Other urban water system outflows | 11,180 | 8,407 |
| Total urban water system outflows | 404,603 | 395,452 |
| Irrigation scheme outflows | 33,622 | 22,619 |
| Delivery to irrigation scheme users | 33,622 | 22,619 |
| Total irrigation scheme outflows | 33,622 | 22,619 |
| Total water outflows | 2,502,939 | 1,811,558 |
| Unaccounted-for difference | ||
| Unaccounted-for difference | 513,028 | 70,657 |
| Unaccounted-for difference | 513,028 | 70,657 |
| Total unaccounted-for difference | 513,028 | 70,657 |
| Total unaccounted-for difference | 513,028 | 70,657 |
| Opening water storage | 166,641 | 191,731 |
| Change in water storage | 45,649 | (25,090) |
| Closing water storage | 212,290 | 166,641 |