Canberra: Statement of Changes in Water Assets and Water Liabilities
Water availability in the Canberra region increased by 5,871 ML during the 2016–17 year. This is the fourth consecutive year that water availability in the region has increased. The change in water available in the region at the end of the year is represented by the change in net water assets.
The Statement of Changes in Water Assets and Water Liabilities is provided in the table below. The statement presents the changes in water assets and water liabilities that occurred during the year, including accrual transactions (e.g. allocations and forfeitures) and actual water flows, both natural and engineered.
| 2017 ML | 2016 ML | |
|---|---|---|
| Water asset increases | ||
| Surface water increases | 979,190 | 923,224 |
| Precipitation | 21,157 | 14,317 |
| Inter-region inflow | 273,071 | 356,494 |
| Runoff | 682,772 | 552,413 |
| Flood return | 2,190 | – |
| Groundwater increases | – | – |
| Inter-region inflow | – | – |
| Recharge: landscape | – | – |
| Urban water system increases | 41,002 | 38,646 |
| Wastewater collected | 40,821 | 38,646 |
| Delivery: inter-region | 181 | 0 |
| Total water asset increases | 1,020,192 | 961,870 |
| Water liability decreases | ||
| Surface water liability decreases | 1,832 | 1,832 |
| Adjustment and forfeiture: individual users | 1,832 | 1,832 |
| Groundwater liability decreases | 851 | 851 |
| Adjustment and forfeiture: individual users | 851 | 851 |
| Total water liability decreases | 2,683 | 2,683 |
| Water asset decreases | ||
| Surface water decreases | 926,432 | 755,014 |
| Evaporation | 30,960 | 24,764 |
| Outflow | 839,432 | 727,659 |
| Leakage: landscape | – | – |
| River and floodplain losses | – | – |
| Overbank flow | 53,617 | – |
| Diversion: statutory rights | – | – |
| Non-allocated diversion: individual users | 2,423 | 2,591 |
| Groundwater decreases | 1,259 | 1,276 |
| Inter-region outflow | – | – |
| Discharge: landscape | – | – |
| Extraction: statutory rights | 435 | 435 |
| Non-allocated extraction: individual users | 824 | 841 |
| Urban water system decreases | 46,723 | 47,057 |
| Supply system delivery: urban users | 45,244 | 45,241 |
| Wastewater discharge: landscape | 3 | 3 |
| Other supply system decreases | 949 | 1,187 |
| Recycled water delivery: urban users | 133 | 246 |
| Other wastewater and recycled water system decreases | 394 | 380 |
| Total water asset decreases | 974,414 | 803,347 |
| Water liability increases | ||
| Surface water liability increases | 1,832 | 1,832 |
| Allocation: individual users | 1,832 | 1,832 |
| Groundwater liability increases | 851 | 851 |
| Allocation: individual users | 851 | 851 |
| Total water liability increases | 2,683 | 2,683 |
| Unaccounted-for difference | (39,907) | (150,507) |
| Change in net water assets | 5,871 | 8,016 |