Perth: Statement of Water Assets and Water Liabilities
The Statement of Water Assets and Water Liabilities presents the volume of water assets and water liabilities at the start and end of the reporting year.
Water assets of the region include physical water assets (referred to as the water stores) and rights or claims to water. Water liabilities include commitments to deliver water to users at the end of the year. The closing net water assets are the volume of water assets in the region minus the water liabilities at the end of the reporting year (Figure W1).
Figure W1 Water assets and water liabilities for the region at 30 June 2015
More detail on the water assets and water liabilities for the 2014–15 year is provided in the Statement of Water Assets and Water Liabilities below.
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.
as at 30 June 2015
| 2015 ML | 2014 ML | |
|---|---|---|
| Water assets | ||
| Surface water | 202,362 | 204,898 |
| Storages | 202,362 | 204,898 |
| Unregulated river | – | – |
| Regulated river | – | – |
| Lakes and wetlands | – | – |
| Total surface water | 202,362 | 204,898 |
| Groundwater | – | – |
| Water table aquifer | – | – |
| Underlying aquifers | – | – |
| Total groundwater | – | – |
| Urban water system | 7,102 | 7,002 |
| Supply system | 7,102 | 7,002 |
| Wastewater | – | – |
| Recycled water | – | – |
| Total urban water system | 7,102 | 7,002 |
| Irrigation scheme | 390 | 390 |
| Supply system | 390 | 390 |
| Total irrigation scheme | 390 | 390 |
| Total water assets | 209,854 | 212,290 |
| Water liabilities | ||
| Surface water liability | 8,437 | 12,587 |
| Allocation remaining: individual users | 8,437 | 12,587 |
| Total surface water liability | 8,437 | 12,587 |
| Groundwater liability | 109,093 | 116,430 |
| Allocation remaining: individual users | 109,093 | 116,430 |
| Total groundwater liability | 109,093 | 116,430 |
| Total water liabilities | 117,530 | 129,017 |
| Opening net water assets | 83,273 | 24,074 |
| Change in net water assets | 9,051 | 59,199 |
| Closing net water assets | 92,324 | 83,273 |