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National Water Account 2015

South East Queensland: Statement of Changes in Water Assets and Water Liabilities

Wivenhoe Lake, South East Queensland (© Bureau of Meteorology, H. Rahman)

The Statement of Changes in Water Assets and Water Liabilities presents the changes in water assets and water liabilities that occurred during the reporting year.

This statement is prepared on an accrual basis. The changes in water assets and water liabilities are recognised when the claim to water or the obligation to deliver it is recorded and not when the actual flow occurs. Figure W2 shows the transactions that change the water assets and water liabilities of the region, including:

  • accrual (non-physical) transactions, indicated by the glass of water symbols
  • actual water flows (both natural and engineered), indicated by the arrows.

 

Figure W2 Changes in water assets and water liabilities for the South East Queensland region during the 2014–15 year

Figure W2 Changes in water assets and water liabilities for the South East Queensland region during the 2014–15 year

 

Line items in the statements are hyperlinked to the associated section of the Supporting information notes. Methods used to derive the volumes are provided in the Quantification approaches notes.

 

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for the year ended 30 June 2015

 2015 ML2014 ML
Water asset increases
Surface water increases4,496,8331,847,925
Precipitation203,534143,512
Runoff4,288,3361,699,479
Discharge: user4,9634,934
Total surface water increases4,496,8331,847,925
 
Groundwater increases––
Total groundwater increases––
 
Urban water system increases257,343229,413
Wastewater collected240,562207,971
Supply system delivery: inter-region15,62020,007
Delivery: desalinated water1,1611,435
Total urban water system increases257,343229,413
 
Total water asset increases4,754,1762,077,338
Water liability decreases
Surface water liability decreases14,34079,461
Adjustment and forfeiture: individual users14,34079,461
Total surface water liability decreases14,34079,461
 
Groundwater liability decreases6,3725,995
Adjustment and forfeiture: individual users6,3725,995
Total groundwater liability decreases6,3725,995
 
Total water liability decreases20,71285,456
Water asset decreases
Surface water decreases3,516,9121,489,925
Evaporation387,453286,303
Outflow2,852,675904,491
Leakage: landscape264,126279,567
Diversions: statutory rights3,6403,670
Non-allocated diversion: individual users1,2009,152
Other decreases7,8186,742
Total surface water decreases3,516,9121,489,925
 
Groundwater decreases3,7633,994
Non-allocated extraction: individual users3,7633,994
Total groundwater decreases3,7633,994
 
Urban water system decreases459,003434,762
Evaporation33263
Leakage: landscape00
Supply system delivery: urban users236,755239,298
Discharge: sea200,224162,979
Discharge: landscape7361468
Supply system transfer: inter-region010
Other supply system decreases3,3713,306
Recycled water delivery: urban users13,98024,141
Other wastewater and recycled water system decreases0187
Wastewater and recycled water system transfer: inter-region3,9043,110
Total urban water system decreases459,003434,762
 
Total water asset decreases3,979,6781,928,681
Water liability increases
Surface water liability increases71,46473,294
Allocation: individual users71,46473,294
Total surface water liability increases71,46473,294
 
Groundwater liability increases9,3359,335
Allocation: individual users9,3359,335
Total groundwater liability increases9,3359,335
 
Total water liability increases80,79982,629
Unaccounted-for difference
Unaccounted-for difference(570,813)(371,238)
Unaccounted-for difference(570,813)(371,238)
Total unaccounted-for difference(570,813)(371,238)
 
Total unaccounted-for difference(570,813)(371,238)
Change in net water assets143,598(219,754)