Statement of Changes in Water Assets and Water Liabilities
- Water availability in the Canberra region decreased by 1,709 ML during the 2016–17 year.
- This followed three consecutive years of increases in water availability in the region.
- 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 prepared according to the Australian Water Accounting Standard 1 and is like an income statement. 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 | 2015 ML | 2014 ML | |
---|---|---|---|---|
Water inflows | 1,100,266 | 1,122,577 | 978,236 | 828,231 |
Surface water inflows | 1,005,408 | 1,029,074 | 890,916 | 740,773 |
Precipitation | 21,041 | 22,873 | 21,790 | 21,662 |
Inter-region inflow | 262,309 | 409,510 | 350,969 | 198,586 |
Runoff | 682,897 | 561,041 | 483,366 | 486,042 |
Flood return | 2,190 | 1,603 | 1,760 | 1,890 |
Wastewater discharge | 36,971 | 34,047 | 33,031 | 32,593 |
Groundwater inflows | 4,079 | 4,454 | 2,920 | 2,081 |
Inter-region inflow | – | – | – | – |
Recharge: landscape | – | – | – | – |
Leakage from urban system | 4,079 | 4,454 | 2,920 | 2,081 |
Urban water system inflows | 90,779 | 89,049 | 84,400 | 85,377 |
Wastewater collected | 40,821 | 38,646 | 37,285 | 36,682 |
Delivery: inter-region | – | 0 | 0 | 0 |
Allocated diversion: surface water | 49,958 | 50,403 | 47,115 | 48,695 |
Water outflows | 1,045,059 | 983,211 | 818,231 | 679,006 |
Surface water outflows | 956,074 | 896,377 | 736,992 | 596,286 |
Evaporation | 31,083 | 32,404 | 31,615 | 32,147 |
Outflows | 818,608 | 773,504 | 614,786 | 468,908 |
Overbank flow | 53,617 | 37,517 | 41,823 | 45,380 |
Non-allocated diversion: individual users | 2,808 | 2,549 | 1,653 | 1,156 |
Allocated diversion: individual users | – | – | – | – |
Allocated diversion: urban system | 49,958 | 50,403 | 47,115 | 48,695 |
Groundwater outflows | 1,254 | 1,276 | 1,061 | 894 |
Extraction: statutory rights | 435 | 435 | 435 | 435 |
Non-allocated extraction: individual users | 819 | 841 | 626 | 459 |
Allocated extraction: individual users | – | – | – | – |
Urban water system outflows | 87,731 | 85,558 | 80,178 | 81,826 |
Supply system delivery: urban users | 45,244 | 45,241 | 42,694 | 45,489 |
Wastewater discharge: landscape | 3 | 3 | – | – |
Wastewater discharge: surface water | 36,971 | 34,047 | 33,031 | 32,593 |
Urban leakage to groundwater | 4,079 | 4,454 | 2,920 | 2,081 |
Other supply system decreases | 949 | 1,187 | 1,405 | 1,462 |
Recycled water delivery: urban users | 91 | 246 | 128 | 201 |
Other wastewater and recycled water system decreases | 394 | 380 | 0 | 0 |
Unaccounted-for difference | (56,916) | (126,163) | (156,490) | (104,812) |
Unaccounted-for difference - surface water | (51,043) | (119,494) | (150,475) | (100,019) |
Unaccounted-for difference - groundwater | (2,825) | (3,178) | (1,859) | (1,187) |
Unaccounted-for difference - urban system | (3,048) | (3,491) | (4,156) | (3,606) |
Changes in water storage | (1,709) | 13,203 | 3,515 | 44,413 |
Opening water storages | 281,677 | 268,474 | 264,959 | 220,546 |
Changes in water storage | (1,709) | 13,203 | 3,515 | 44,413 |
Closing water storages | 279,968 | 281,677 | 268,474 | 264,959 |
Non-physical water changes | 0 | 0 | 0 | 0 |
Urban water system | 0 | 0 | 0 | 0 |
Claim on surface water for urban use | 0 | 0 | 0 | 0 |
Surface water liabilities | 0 | 0 | 0 | 0 |
Allocation remaining: individual users | 0 | 0 | 0 | 0 |
Allocation remaining: urban water system | 0 | 0 | 0 | 0 |
Groundwater liabilities | 0 | 0 | 0 | 0 |
Allocation remaining: individual users | 0 | 0 | 0 | 0 |
Change in net water assets | (1,709) | 13,203 | 3,515 | 44,413 |