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National Water Account 2017

Melbourne: Statement of Water Flows

for the year ended 30 June 2017

The volume of water in the region's storages at 30 June 2017 is 623,298 ML, an increase of 39,169 ML from the start of the 2016–17 year. This increase represents the change in water volume in the region's surface water storages. This is the region's first annual increase in three years.


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.



 2017 ML2016 ML
Water inflows
Surface water inflows2,092,9711,206,994
Point return: irrigation6182
Flood return90,424
Delivery: inter-region agreement89,441248,157
Delivery: desalinated water46,2160
Groundwater inflows231,201233,121
Inter-region inflow00
Inter-region coastal inflow28,71328,394
Recharge: landscape202,488192,457
Other groundwater increases012,270
Urban water system inflows377,859351,066
Wastewater collected377,859350,688
Delivery: inter-region378
Other increases00
Total water inflows2,702,0311,791,181
Water outflows
Surface water outflows1,423,443778,145
Overbank flow137,399
Diversion: statutory rights
Non-allocated diversion: individual users7,32514,670
Allocated diversion: individual users9,1305,004
Transfer: inter-region3,7923,540
Groundwater outflows185,818149,164
Inter-region outflow00
Inter-region coastal outflow134,657124,561
Discharge: landscape
Extraction: statutory rights
Non-allocated extraction: individual users
Allocated extraction: individual users20,31224,603
Other groundwater decreases30,8490
Urban water system outflows758,790739,864
Delivery: urban users386,197390,311
Delivery: irrigation8,97011,868
Discharge: sea301,846267,248
Discharge: landscape19027
Supply system transfer: inter-region1,071431
Supply system delivery: irrigation7561,365
Other supply system decreases11,71715,574
Recycled water delivery: urban users30,63331,492
Other wastewater decreases17,41021,548
Total water outflows2,368,0511,667,173
Unaccounted-for difference(294,811)(129,243)
Opening water storage584,129589,364
Change in water storage39,169(5,235)
Closing water storage623,298584,129