Perth

                                                                                                   

27.1.3.4 Groundwater allocation announcement—urban holder

                             

Supporting information   


This line item refers to the total groundwater allocation for the bore fields within the Perth region that supply water to the urban system.

The annual allocation for each bore field for 2009-10 is given below.

 

Groundwater source

Allocation (ML)

Perth city region

 

Gingin

230

Gnangara

28,075

Gwelup

10,550

Jandakot

10,800

Mirrabooka

12,235

Perth

53,040

Wanneroo

4,900

Yanchep

1,400

Southwest region

 

Murray

1,000

South West Coastal

120

Total allocation

122,350

 

Quantification approach   


Data source

Western Australian Department of Water: Water Resource Licensing database.

 

Data provider

Western Australian Department of Water.

 

Method

The Water Corporation manages the urban water supply system, which is subject to licence agreements for water extraction from the bore fields. One of the conditions of the licence agreement is that the maximum amount of extraction for each year is announced by the Minister for Water on an annual basis. The announced allocation is made after a review, by the Department of Water, of aquifer levels in the Perth region in October of the reporting year.

The total groundwater allocation announcement is assumed to be equal to 100% of the annual entitlement.

 

Uncertainty

Not applicable.

 

Approximations, assumptions, caveats/limitations

Nil.