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National Water Account 2019

Ord: Statement of Water Flows

for the year ended 30 June 2019

  • The volume of water in the region's storages decreased during 2018–19 for the second successive year.
  • This decrease represents the change in water volume in the region's surface water storages.



The Statement of Water Flows is provided below and presents the actual water flows associated with the region's water stores during the year, including flows corresponding to the accrual transactions shown in the Statement of Changes in Water Assets and Water Liabilities.



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 2019 ML2018 ML2017 ML2016 ML2015 ML2014 ML
Water inflows
Surface water inflows 2,483,1694,248,76528,297,2924,306,3386,467,90114,958,874
Precipitation 426,123568,1591,534,441647,542582,1881,043,170
Runoff 2,005,2543,620,03926,318,6003,607,2115,834,25413,915,118
Point return: irrigation 51,00051,00051,00051,00051,000
Flood return 2078,982392,666
Discharge: wastewater 585585585585459586
Groundwater inflows 6,2026,6377,5798,5729,33210,684
Inter-region inflow –
Recharge: landscape 6,2026,6377,5798,5729,33210,684
Total water inflows 2,489,3714,255,40228,304,8714,314,9106,477,23314,969,558
Water outflows
Surface water outflows 5,169,2426,131,45420,099,5765,215,4336,487,12910,390,815
Evaporation 1,995,6422,266,8792,310,7972,055,6332,458,0541,384,330
Outflow 2,864,9443,606,75316,921,1692,953,5933,806,6388,848,449
Leakage: landscape 808080804545
Overbank flow 1,68731,250682,226
River loss –
Allocated diversion: individual users 35,24032,30132,33529,394*24,04526,271
Allocated diversion: urban system 425425406433436473
Allocated diversion: irrigation 271,224*193,766*152,563*176,300*197,911*131,247
Groundwater outflows 6,2026,6377,5798,5729,33210,684
Inter-region outflow –
Discharge: landscape –
Allocated extraction: individual users 4,4244,8595,8196,7407,5598,966
Allocated extraction: urban system 1,7781,7781,7601,8321,7731,718
Total water outflows 5,175,4446,138,09120,107,1555,224,0056,496,46110,401,499
Unaccounted-for difference (463,451)*(959,875)*(4,438,104)*(961,111)*(982,659)*(2,217,825)
Water storage
Surface water storage 5,840,2888,989,81211,832,3768,072,7649,942,97010,944,857
Opening surface water storage 8,989,81211,832,3768,072,7649,942,97010,944,8578,594,623
Change in surface water storage (3,149,524)(2,842,564)3,759,612(1,870,206)(1,001,887)2,350,234
Closing surface water storage 5,840,2888,989,81211,832,3768,072,7649,942,97010,944,857
Groundwater storage –
Opening groundwater storage –
Change in groundwater storage 000000
Closing groundwater storage –
Total closing water storage 5,840,2888,989,81211,832,3768,072,7649,942,97010,944,857


* different to published volume in historical accounts (see Governance section for more information)