Murray–Darling Basin: Statement of Changes in Water Assets and Water Liabilities
for the year ended 30 June 2017
Water availability in the Murray–Darling Basin region increased by 2,356,401 ML during the 2016–17 year. This is the second consecutive annual increase in the region's water availability. 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 | 41,866,711 | 23,024,867 |
Precipitation | 2,048,689 | 1,248,850 |
Inter-region inflow | 22,000 | 0 |
Runoff | 34,932,922 | 19,091,888 |
Point return: irrigation | 277,177 | 295,507 |
Flood return | 1,670,952 | - |
Discharge: urban supply system | 0 | 0 |
Claims: inter-region | 2,647,559 | 1,761,592 |
Return flow: environmental purposes | 229,298 | 590,987 |
Discharge: wastewater | 38,114 | 36,043 |
Groundwater increases | 688,236 | 411,123 |
Inter-region inflow | 2,461 | 2,553 |
Inter-region coastal inflow | 101 | 77 |
Recharge: landscape | 680,003 | 407,340 |
Leakage: urban system | 4,079 | – |
Managed aquifer recharge: individual user | 1,592 | 1,153 |
Other increases | 0 | 0 |
Total water asset increases | 42,554,947 | 23,435,990 |
Water liability decreases | ||
Surface water liability decreases | 538,093 | 469,876 |
Adjustment and forfeiture: individual users | (90,720) | 552,963 |
Adjustment and forfeiture: urban system | 331,518 | 75,872 |
Adjustment and forfeiture: environmental purposes | 297,295 | (158,959) |
Groundwater liability decreases | 1,133,227 | 951,082 |
Adjustment and forfeiture: individual users | 1,095,301 | 922,348 |
Adjustment and forfeiture: urban system | 34,767 | 29,534 |
Adjustment and forfeiture: environmental purposes | 3,159 | (800) |
Total water liability decreases | 1,671,320 | 1,420,958 |
Water asset decreases | ||
Surface water decreases | 27,944,950 | 15,879,649 |
Evaporation | 4,518,203 | 3,376,265 |
Outflow | 7,401,000 | 663,000 |
Overbank flow | 6,562,380 | 59,546 |
River and floodplain losses | 6,951,514 | 10,420,954 |
Diversion: statutory rights | 50,861 | 59,249 |
Non-allocated diversions: individual users | 1,675,241 | 818,728 |
Non-allocated diversions: urban system | 11,661 | 12,255 |
Claims: inter-region | 329,000 | 0 |
Non-allocated diversions: environmental purposes | 154,218 | 42,246 |
Conveyance losses for allocated diversions | 290,872 | 427,406 |
Groundwater decreases | 304,625 | 325,067 |
Inter-region outflow | 33 | 57 |
Inter-region coastal outflow | 1,493 | 1,700 |
Discharge: landscape | 63,999 | 85,641 |
Extraction: statutory rights | 239,100 | 237,669 |
Non-allocated extraction: individual users | 0 | 0 |
Allocated extraction: environmental purposes | 0 | 0 |
Other decreases | 0 | 0 |
Total water asset decreases | 28,249,575 | 16,204,716 |
Water liability increases | ||
Surface water liability increases | 11,703,108 | 6,418,474 |
Allocation: individual users | 8,321,727 | 4,473,815 |
Allocation: urban system | 639,522 | 557,680 |
Allocation: environmental purposes | 2,741,859 | 1,386,979 |
Groundwater liability increases | 2,241,270 | 2,218,287 |
Allocation: individual users | 2,158,223 | 2,166,333 |
Allocation: urban system | 73,681 | 50,681 |
Allocation: environmental purposes | 9,366 | 1,273 |
Total water liability increases | 13,944,378 | 8,636,761 |
Unaccounted-for difference | 324,087 | 1,013,359 |
Change in net water assets | 2,356,401 | 1,028,830 |