Perth
Statement of Changes in Water Assets and Water Liabilities
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 asset increases | ||
| Surface water increases | 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 increases | 814,691 | 379,660 |
| Groundwater increases | 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 increases | 1,990,720 | 1,243,364 |
| Urban water system increases | 256,205 | 234,101 |
| Wastewater collected | 141,024 | 136,392 |
| Delivery of water from outside region | 2,121 | 1,939 |
| Delivery of desalinated water to urban water system | 113,060 | 95,770 |
| Total urban water system increases | 256,205 | 234,101 |
| Total water asset increases | 3,061,616 | 1,857,125 |
| Water liability decreases | ||
| Surface water liability decreases | 5,219 | 272 |
| Adjustment and forfeiture of surface water allocation: individual users | 5,219 | 272 |
| Total surface water liability decreases | 5,219 | 272 |
| Groundwater liability decreases | 14,172 | 32,483 |
| Adjustment and forfeiture of groundwater allocation: individual users | 14,172 | 32,483 |
| Total groundwater liability decreases | 14,172 | 32,483 |
| Total water liability decreases | 19,391 | 32,755 |
| Water asset decreases | ||
| Surface water decreases | 589,186 | 234,838 |
| 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 | – | – |
| Total surface water decreases | 589,186 | 234,838 |
| Groundwater decreases | 1,160,149 | 853,286 |
| 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 |
| Total groundwater decreases | 1,160,149 | 853,286 |
| Urban water system decreases | 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 decreases | 11,180 | 8,407 |
| Total urban water system decreases | 404,603 | 395,452 |
| Irrigation scheme decreases | 33,622 | 22,619 |
| Delivery to irrigation scheme users | 33,622 | 22,619 |
| Total irrigation scheme decreases | 33,622 | 22,619 |
| Total water asset decreases | 2,187,560 | 1,506,195 |
| Water liability increases | ||
| Surface water liability increases | 33,958 | 33,886 |
| Surface water allocation announcements: individual users | 33,958 | 33,886 |
| Total surface water liability increases | 33,958 | 33,886 |
| Groundwater liability increases | 287,262 | 284,520 |
| Groundwater allocation announcements: individual users | 287,262 | 284,520 |
| Total groundwater liability increases | 287,262 | 284,520 |
| Total water liability increases | 321,220 | 318,406 |
| 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 |
| Change in net water assets | 59,199 | (5,378) |