Bureau of Meteorology logo
 
                           

Perth

                                                                                                   

Reconciliations

                             

Reconciliations   


a. Reconciliation of the net change in water storage to the change in net water assets


Closing balance (ML)
CHANGE IN NET WATER ASSETS 27,882
Adjustments for:  
Increase / (decrease) in:  
7 Non-physical water asset  
7.12 Allocation from connected surface water on regulated flows remaining—urban holder

4
7.14 Allocation from groundwater remaining—urban holder

0
7.15 Non-physical water distribution system asset—other lumped

0
TOTAL 7 Non-physical water asset

4
   
8 Surface water liability  
8.1.2.1 Allocation on regulated flows remaining—high security, bulk irrigator holder

0
8.1.2.4 Allocation on regulated flows remaining—high security, urban holder

(4)
8.1.9.7 Allocation on regulated flows remaining—other lumped holders

347
TOTAL 8 Surface water liability

343
   
9 Groundwater liability  
9.1.3.1 Groundwater allocation remaining—bulk irrigator holder

0
9.1.3.4 Groundwater allocation remaining—urban holder

0
9.1.3.7 Groundwater allocation remaining—other lumped holders

1,874
TOTAL 9 Groundwater liability

1,874
   
NET CHANGE IN WATER STORAGE

30,103

b. Reconciliation of closing water storage to total water assets

Closing balance (ML)
1 Connected surface water store
1.1 Storages - Entitlement system

253,878
TOTAL 1 Connected surface water store

253,878
2 Groundwater store assets
2.1 Water table aquifer

-
2.2 Underlying aquifers

-
TOTAL 2 Groundwater store

-
5 Water distribution system store
5.1 Urban potable water supply system

6,942
5.4 Irrigation water supply system

370
TOTAL 5 Water distribution system store

7,312
TOTAL CLOSING WATER STORAGE

261,190
Plus:
7 Non-physical water asset
7.12 Allocation from connected surface water on regulated flows remaining—urban holder

102
7.14 Allocation from groundwater remaining—urban holder

230
7.15 Non-physical water distribution system asset—other lumped

54
TOTAL 7 Non-physical water asset

386
TOTAL WATER ASSETS

261,576

Of the water assets that could be quantified, there was the equivalent of 261,576 ML ‘available’ in the Perth region at 30 June 2010, which is an increase of30,103 ML from 30 June 2009.