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National Water Account 2018

Daly: Statement of Water Flows

for the year ended 30 June 2018

  • The volume of water in the region's storages decreased during the 2017–18 year.
  • This decrease mainly represents the change in water volume in the region's aquifers. This follows a large annual increase in aquifer storage last year.

 

 

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.

 

 

Select comparative year

 

 2018 ML2017 ML2016 ML2015 ML2014 ML2013 ML
Water inflows
Surface water inflows11,705,00313,098,9579,429,2197,540,1918,980,2338,082,234
Precipitation110,995174,6389989103103
Runoff10,449,36312,010,0008,668,0006,530,0008,013,0007,131,000
Flood return302,525127,199
Discharge: wastewater120120120102130131
Discharge: groundwater*842,000787,000761,0001,010,000967,000951,000
 
Groundwater inflows406,0001,326,000418,000428,000350,000368,000
Inter-region inflow10,00010,00010,00010,00010,00010,000
Recharge: landscape370,0001,273,000370,000382,000315,000335,000
Recharge: surface water*26,00043,00038,00036,00025,00023,000
 
Total water inflows12,111,00314,424,9579,847,2197,968,1919,330,2338,450,234
Water outflows
Surface water outflows11,960,24111,753,8729,677,8814,117,4139,441,6226,214,487
Evaporation114,719162,59236,18740,19536,11938,130
Outflow11,362,40510,886,0019,594,6264,032,3459,373,0006,146,000
Overbank flow448,049653,665
Diversion: statutory rights5,3695,3695,3695,3695,3695,369
Allocated diversion: individual users973801971**799**245**623
Allocated diversion: urban system2,7262,4442,728**2,705**1,889**2,396
Recharge: groundwater*26,00043,00038,00036,00025,00023,000
 
Groundwater outflows880,896823,264792,0241,035,600988,665968,778
Inter-region outflow000000
Discharge: landscape
Extraction: statutory rights4,2804,2804,2804,2804,2804,280
Non-allocated extraction: individual users180180180180180180
Allocated extraction: individual users34,15731,04425,599**20,247**16,561**12,577
Allocated extraction: urban system279760965**893**644**741
Discharge: surface water*842,000787,000761,0001,010,000967,000951,000
 
Total water outflows12,841,13712,577,13610,469,9055,153,01310,430,2877,183,265
Unaccounted-for difference268,499(1,331,821)286,686**(3,407,272)**472,955**(1,859,056)
 
 
Water storage
Surface water storage12,97314,608220220314413
Opening surface water storage14,60814,608220314413500
Change in surface water storage(1,635)00(94)(99)(87)
Closing surface water storage12,97314,608220220314413
 
Groundwater storage
Opening groundwater storage
Change in groundwater storage(460,000)516,000(336,000)**(592,000)**(627,000)**(592,000)
Closing groundwater storage
Total closing water storage
 

* between-store flows

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