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National Water Account 2015

Sydney: Statement of Changes in Water Assets and Water Liabilities

Warragamba Dam, New South Wales (iStock © Kokkai Ng)

 

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 Sydney region during the 2014–15 year

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


More detail on the changes in water assets and water liabilities for the 2014–15 year is provided in the Statement of Changes in Water Assets and Water Liabilities below.

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

 

for the year ended 30 June 2015

 2015 ML2014 ML
Water asset increases
Surface water increases5,407,2012,092,915
Precipitation155,84891,668
Runoff5,239,5111,986,928
Discharge: user82,485
Claims: inter-region11,83411,834
Total surface water increases5,407,2012,092,915
 
Urban water system increases550,174483,601
Wastewater collected547,009 480,243
Recycled water delivery: inter-region 1,3871,580
Claims: inter-region1,778 1,778
Total urban water system increases550,174 483,601
Total water asset increases5,957,3752,576,516
Water liability decreases
Surface water liability decreases134,553116,485
Adjustment and forfeiture: individual users134,553 116,485
Total surface water liability decreases 134,553116,485
Total water liability decreases 134,553116,485
Water asset decreases
Surface water decreases4,611,9531,930,582
Evaporation166,963168,947
Outflow4,403,6941,724,770
Diversion: statutory rights32,53032,530
Claims: inter-region8,766 4,335
Total surface water decreases4,611,9531,930,582
 
Urban water system decreases1,000,803968,420
Evaporation0253
Leakage: groundwater37,21040,390
Supply system delivery: urban users478,372487,104
Recycled water delivery: urban users20,51522,018
Discharge: sea443,546394,499
Supply system transfer: inter-region5,3324,258
Claims: inter-region1,085989
Other supply system decreases14,74315,153
Other wastewater and recycled water system decreases03,756
Total urban water system decreases1,000,803968,420
Total water asset decreases5,612,7562,890,002
Water liability increases
Surface water liability increases159,480159,462
Allocation: individual users159,480159,462
Total surface water liability increases159,480159,462
Total water liability increases159,480159,462
Unaccounted-for difference
Unaccounted-for difference(42,699)(84,851)
Total unaccounted-for difference(42,699)(84,851)
Total unaccounted-for difference(42,699)(84,851)
Change in net water assets276,993(450,314)