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National Water Account 2018

Melbourne: Statement of Water Assets and Water Liabilities

  • Water availability in the Melbourne region decreased during the 2017–18 year.
  • Water availability is represented by the net water assets, which are the volume of water assets minus the water liabilities.

 

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The Statement of Water Assets and Water Liabilities is provided in the table below. The statement presents the volume of water assets, and water liabilities at the start and end of the reporting year.

 

 

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 2018 ML2017 ML2016 ML2015 ML2014 ML2013 ML
Water assets
Surface water1,108,1191,203,0111,107,7871,287,6281,397,8691,377,958
Storages506,843552,541511,129522,005581,952582,979
Rivers2,4093,1124,553–––
Claims: inter-region598,867**647,358592,105765,623815,917794,979
Claims: desalinated water000000
 
Groundwater38,61938,61938,61938,61938,61938,619
Water table aquifer22,05422,05422,05422,05422,05422,054
Underlying aquifers16,56516,56516,56516,56516,56516,565
 
Urban water system510,500542,413511,509513,006538,517524,321
Supply system––––––
Wastewater28,41929,026 29,828 28,740 29,715 29,132
Recycled water––––––
Claims: surface water*482,081513,387481,681484,266508,802495,189
Claims: groundwater*000000
 
Total water assets1,657,2381,784,0431,657,9151,839,2531,975,0051,940,898
Water liabilities
Surface water liability490,489524,382485,193490,207513,636495,189
Allocation remaining: individual users8,408**10,9953,5125,9414,8340
Allocation remaining: urban system*482,081513,387481,681484,266508,802495,189
Commitment: inter-region00 0 0 0 0
 
Groundwater liability000000
Allocation remaining: individual users000000
Allocation remaining: urban system*000000
 
Total water liabilities490,489524,382485,193490,207513,636495,189
Net water assets
Net surface water assets617,630678,629    
Opening net surface water assets678,629622,594797,421884,233882,769791,224
Change in net surface water assets(60,999)**56,035(174,827)(86,812)1,46491,545
Closing net surface water assets617,630**678,629622,594797,421884,233882,769
 
Net groundwater assets38,61938,61938,61938,61938,61938,619
Opening net groundwater assets38,61938,61938,61938,61938,61938,438
Change in net groundwater assets00000181
Closing net groundwater assets38,61938,61938,61938,61938,61938,619
Net urban water assets510,500542,413    
Opening net urban water assets542,413511,509513,006538,517524,321613,820
Change in net urban water assets(31,913)30,904(1,497)(25,511)14,196(89,499)
Closing net urban water assets510,500542,413511,509513,006538,517524,321
Total closing net water assets1,166,749**1,259,6611,172,7221,349,0461,461,3691,445,709
 

* between-store claims / liabilities