Perth

Changes in Water Assets and Water Liabilities

	Data Type	2010 ML
Water asset increases
Connected surface water increases		1,239,241
13.1 Precipitation on connected surface water	Modelled	28,360
13.2 Connected surface water flow from outside region		-
13.3 Groundwater discharge to connected surface water	Modelled	220,149
13.4 Landscape water drain to connected surface water
13.4.1 Rainfall-runoff to connected surface water	Estimated	942,097
13.4.2 Diffuse return of irrigation water to connected surface water		-
13.4.3 Point return of irrigation water to connected surface water		-
13.5 Overbank flood return to river channel		-
13.6 Delivery of water transferred-in to connected surface water
13.6.2 Delivery of traded-in water to connected surface water	Measured	1,500
13.6.5 Other lumped delivery of water transferred-in to connected surface water	Measured	1,902
13.8 Other lumped surface water increases	Measured	45,233
Total Connected surface water increases		1,239,241

Groundwater increases		1,800,124
15.1 Groundwater inflow from outside region
15.1.1 Regional groundwater inflow	Modelled	117,485
15.1.2 Seawater intrusion into aquifers	Modelled	0
15.2 Groundwater recharge
15.2.1 Diffuse groundwater recharge from landscape water	Modelled	1,666,283
15.2.2 Groundwater recharge from connected surface water	Modelled	0
15.2.4 Leakage from water distribution system to groundwater	Estimated	14,881
15.2.6 Managed aquifer recharge	Measured	1,475
Total Groundwater increases		1,800,124

Water distribution system increases		469,217
19.5 Delivery of water transferred-in to water distribution system
19.5.1 Delivery of desalinated water transferred-in to urban water supply system	Measured	47,693
*Total physical water asset increases*		47,693
Non-physical water assets increases
23.9 Allocation announcement on regulated flows—urban holder	Other	240,157
23.11 Groundwater allocation announcement—urban holder	Other	122,350
23.12 Non-physical Water distribution system increases—other lumped	Other	59,017
*Total non-physical water assets increases*		421,524
Total Water distribution system increases		469,217

Total water asset increases		3,508,582
Water liability decreases
Surface water liability decreases		121,849
26.1 Adjustment and forfeiture of allocation on regulated flows
26.1.2 Adjustment and forfeiture of allocation on regulated flows—high security water access entitlement
26.1.2.1 Adjustment and forfeiture of allocation on regulated flows—high security, bulk irrigator holder	Measured	12,805
26.1.2.4 Adjustment and forfeiture of allocation on regulated flows—high security, urban holder	Measured	98,885
26.1.9 Adjustment and forfeiture of allocation on regulated flows—other lumped water access entitlement
26.1.9.7 Adjustment and forfeiture of allocation on regulated flows—other lumped holders	Estimated	517
26.5 Other lumped surface water liability decreases	Measured	9,642
Total Surface water liability decreases		121,849

Groundwater liability decreases		9,163
28.1 Adjustment and forfeiture of groundwater allocation
28.1.3 Adjustment and forfeiture of groundwater allocation—other lumped class
28.1.3.4 Adjustment and forfeiture of groundwater allocation—urban holder	Measured	1,522
28.1.3.7 Adjustment and forfeiture of groundwater allocation—other lumped holders	Estimated	7,641
Total Groundwater liability decreases		9,163

Total water liability decreases		131,012
Water asset decreases
Connected surface water decreases		847,280
14.1 Evaporation from connected surface water	Modelled	77,888
14.2 Surface water flow out of region	Estimated	769,234
14.3 Leakage from connected surface water store
14.3.1 Groundwater recharge from connected surface water	Modelled	0
14.3.2 Leakage from connected surface water to landscape	Measured	158
Total Connected surface water decreases		847,280

Groundwater decreases		1,396,559
16.1 Groundwater outflow out of region
16.1.1 Regional groundwater outflow	Modelled	94,688
16.1.2 Groundwater discharge into sea	Modelled	339,441
16.2 Evaporation from groundwater		-
16.3 Groundwater discharge
16.3.1 Groundwater discharge to landscape	Modelled	665,560
16.3.2 Groundwater discharge to connected surface water	Modelled	220,149
16.4 Groundwater extraction under other statutory right
16.4.2 Groundwater extraction—other lumped basic rights	Estimated	76,721
Total Groundwater decreases		1,396,559

Water distribution system decreases		437,051
Physical water asset decreases
20.2 Leakages from water distribution system
20.2.2 Leakage from water distribution system to groundwater	Estimated	14,881
20.3 Irrigation water application from water distribution system
20.3.1 Application of water from Irrigation water supply system for irrigation	Estimated	41,740
20.3.2 Application of water from urban water supply system and recycled water supply system for irrigation or outdoor use	Estimated	96,312
20.4 Waste water discharge
20.4.2 Wastewater discharge out of region	Measured	116,507
20.4.3 Other lumped waste water discharge	Measured	4,608
20.5 Recycled water discharge
20.5.2 Managed Aquifer Recharge	Measured	1,475
20.5.3 Other lumped recycled water discharge	Measured	6,441
20.7 Other lumped water distribution system decreases	Measured	41,875
*Total physical water asset decreases*		323,839
Non-physical water assets decreases
24.9 Adjustment and forfeiture of allocation on regulated flows—urban holder	Measured	98,885
24.11 Adjustment and forfeiture of groundwater allocation—urban holder	Measured	1,522
24.12 Non-physical Water distribution system decreases—other lumped	Estimated	12,805
*Total non-physical water assets decreases*		113,212
Total Water distribution system decreases		437,051

Total water asset decreases		2,680,890
Water liability increases
Surface water liability increases		378,011
25.1 Allocation announcement on regulated flows
25.1.2 Allocation announcement on regulated flows—high security water access entitlement
25.1.2.1 Allocation announcement on regulated flows—high security, bulk irrigator holder	Other	58,365
25.1.2.4 Allocation announcement on regulated flows—high security, urban holder	Other	240,157
25.1.9 Allocation announcement on regulated flows—other lumped water access entitlement
25.1.9.7 Allocation announcement on regulated flows—other lumped holders	Other	43,189
25.6 Other lumped surface water liability increases	Other	36,300
Total Surface water liability increases		378,011

Groundwater liability increases		426,999
27.1 Groundwater allocation announcement
27.1.3 Groundwater allocation announcement—other lumped class
27.1.3.1 Groundwater allocation announcement—bulk irrigator holder	Other	652
27.1.3.4 Groundwater allocation announcement—urban holder	Other	122,350
27.1.3.7 Groundwater allocation announcement—other lumped holders	Other	303,997
Total Groundwater liability increases		426,999

Total water liability increases		805,010
Unaccounted-for difference		125,812
30.2 Unaccounted-for difference—connected surface water store		106,039
30.3 Unaccounted-for difference—groundwater store		(12,397)
30.5 Unaccounted-for difference—water distribution system store		32,170
Total Unaccounted-for difference		125,812

Change in net water assets		27,882
	Data Type	2010 ML

National Water Account 2010

Perth

Changes in Water Assets and Water Liabilities

Water asset increases

Connected surface water increases

Groundwater increases

Water distribution system increases

Non-physical water assets increases

Total water asset increases

3,508,582

Water liability decreases

Surface water liability decreases

Groundwater liability decreases

Total water liability decreases

131,012

Water asset decreases

Connected surface water decreases

Groundwater decreases

Water distribution system decreases

Physical water asset decreases

Non-physical water assets decreases

Total water asset decreases

2,680,890

Water liability increases

Surface water liability increases

Groundwater liability increases

Total water liability increases

805,010

Unaccounted-for difference

Change in net water assets

27,882