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National Water Account 2018

Adelaide: 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 represents the change in water volume in the region's surface water storages. This follows an annual increase in storage last year.

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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.

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	2018 ML	2017 ML	2016 ML	2015 ML	2014 ML	2013 ML
Water inflows
Surface water inflows	413,790	934,069	391,805	382,364	568,419	436,011
Precipitation	12,015	14,381	7,329	7,096	11,209	6,783
Runoff	200,858	810,773	170,411	237,520	448,723	286,463
Discharge: groundwater*	73,921	73,921	73,921	73,921	74,012	72,148
Flood return	55,928	–	–	–	–	–
Delivery: inter-region agreement	71,068	34,994	140,144	63,827	32,149	**68,420
Discharge: wastewater	–	–	–	–	**2,386	**2,197

Groundwater inflows	93,825	125,638	121,144	432,444	544,923	392,662
Inter-region inflow	53	60	20	27	21	31
Inter-region coastal inflow	1,353	1,085	1,300	1,603	1,624	1,562
Recharge: landscape	76,966	109,055	100,839	408,445	526,777	373,428
Leakage: farm dams	–	–	–	888	1,131	999
Leakage: urban*	11,941	14,130	15,456	18,085	15,309	16,529
Managed aquifer recharge: individual users	3,215	964	3,205	3,186	–	–
Managed aquifer recharge: urban*	297	344	324	210	61	113

Urban water system inflows	262,380	254,829	252,441	249,813	249,235	184,796
Non-allocated diversion: surface water*	51,339	15,478	128,010	56,943	**26,626	–
Allocated diversion: surface water*	105,970	128,100	21,108	78,200	66,099	57,281
Wastewater collected	100,803	107,139	95,637	**91,945	95,560	91,043
Delivery: desalinated water	4,268	4,112	7,686	22,725	60,950	36,472

Irrigation scheme inflows	35,943	20,892	30,881	29,101	25,576	29,664
Delivery: recycled water*	20,392	14,441	21,194	21,024	18,684	21,586
Delivery: inter-region agreement	4,801	5,683	8,779	7,283	6,221	7,366
Other increases	10,550	568	598	584	610	600
Non-allocated extraction: groundwater*	200	200	310	210	61	112

Total water inflows	805,938	1,335,428	796,271	1,096,240	1,388,213	1,043,133
Water outflows
Surface water outflows	434,977	627,079	238,803	269,156	285,418	175,480
Evaporation	21,672	19,488	15,705	24,651	16,954	14,741
Outflow	186,053	459,018	70,010	106,422	166,640	100,442
Other statutory rights	–	–	–	–	1,738	2,006
Recharge: landscape	–	–	–	–	–	–
Overbank flow	66,603	–	–	–	–	–
Other decreases	–	–	–	–	6,415	–
Allocated diversion: individual users	3,340	4,995	3,970	2,940	946	1,738
Non-allocated diversion: urban system*	51,339	15,478	128,010	**56,943	**26,626	–
Allocated diversion: urban system*	105,970	128,100	21,108	78,200	66,099	57,281

Groundwater outflows	137,870	116,628	132,689	461,859	362,572	236,077
Inter-region outflow	269	199	378	368	383	510
Inter-region coastal outflow	1,890	1,266	932	966	972	842
Discharge: surface water*	73,921	73,921	73,921	73,921	74,012	72,148
Discharge: landscape	–	–	–	335,143	243,506	108,290
Extraction: statutory rights	7,797	434	1,108	1,108	20,079	26,647
Non-allocated extraction: irrigation*	200	200	310	210	61	112
Allocated extraction: individual users	53,793	40,608	56,040	50,143	23,559	27,528

Urban water system outflows	260,410	249,731	250,878	251,138	241,917	245,634
Supply system delivery: urban users	141,744	123,830	134,533	136,092	132,547	141,892
Discharge: sea	63,033	76,769	56,381	58,462	64,399	59,264
Supply system transfer: inter-region	5,854	3,793	4,771	**4771	4,150	4,053
Recycled water delivery: urban users	6,731	5,623	5,972	3,906	3,056	–
Recycled water delivery: irrigation*	20,392	14,441	21,194	21,024	18,684	21,586
Other wastewater discharge	1,439	582	–	–	–	–
Other supply system decreases	2,038	1,825	2,043	1,257	1,325	–
Wastewater discharge: surface water*	-	-	-	-	**2,386	**2,197
Other wastewater decreases	6,941	8,394	10,204	8,910	–	–
Leakage: groundwater*	11,941	14,130	15,456	18,085	15,309	16,529
Managed aquifer recharge*	297	344	324	210	61	113

Irrigation scheme outflows	31,853	21,879	28,815	26,992	24,149	26,170
Delivery	31,853	21,879	28,815	26,992	24,149	26,170

Total water outflows	865,110	1,015,317	651,185	1,009,145	914,056	683,361

Unaccounted-for difference	40,394	(312,234)	**137,017	**115,022	**438,731	**374,205


Water storage
Surface water storage	92,399	111,177	103,300	94,769	122,502	87,330
Opening surface water storage	111,177	103,300	**95,231	**123,158	**87,732	**97,663
Change in surface water storage	(18,778)	7,877	8,069	**(27,927)	**35,426	**(9,931)
Closing surface water storage	92,399	111,177	103,300	**95,231	**123,158	**87,732

Groundwater storage	86,356	86,356	86,356	86,356	86,356	86,356
Opening groundwater storage	86,356	86,356	86,356	86,356	86,356	90,858
Change in groundwater storage	0	0	0	0	0	(4,502)
Closing groundwater storage	86,356	86,356	86,356	86,356	86,356	86,356
Total closing water storage	178,755	197,533	189,656	181,587	209,514	174,088

* between-store flows

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

National Water Account 2018

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Adelaide: Statement of Water Flows

for the year ended 30 June 2018

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