Perth
Reconciliations

Reconciliation of closing water storage to total water assets

Table 1 Reconciliation of closing water storage to total water assets for the Perth region
	2012 ML	2011 ML

Closing water storage presented in the Statement of Water Flows	217,185	167,546

1 Surface water
1.1 Storages	209,455	160,173
1.2 Unregulated river	–	–
1.3 Regulated river	–	–
1.4 Lakes and wetlands	–	–
2 Groundwater
2.1 Water table aquifer	–	–
2.2 Underlying aquifers	–	–
3 Urban water system
3.1 Urban water supply system	7,340	7,003
3.2 Wastewater system	–	–
3.3 Recycled water system	–	–
4 Irrigation Scheme
4.1 Irrigation water supply system	390	370

Total water storage as presented in the Statement of Water Assets and Water Liabilities	217,185	167,546

plus other water assets	0	0

Total water assets	217,185	167,546

Table 2 Reconciliation of the net change in water storage to the change in net water assets for the Perth region
	2012 ML	2011 ML

Change in net water assets	72,678	(89,907)
adjustments for:
(Increase) / decrease in non-physical water assets	0	0

Increase / (decrease) in water liabilities
5 Surface water liability
5.1 Surface water allocation remaining	(13,851)	(67)
5.4 Inter-region commitment on surface water	0	0
6 Groundwater liability
6.1 Groundwater allocation remaining	(9,188)	(3,670)
Total change in water liabilities	(23,039)	(3,737)

Net change in water storage	49,639	(93,644)