Perth
21.2 Surface water allocation announcements – urban system

Supporting information

This line item volume (240,157 ML) represents the total water allocation for surface water supply to the urban water system in the Perth region during the 2011–12 year.

The annual allocation for each surface water resource for the 2011–12 year is given in the following table.

 

Annual allocation for each surface water resource within the Perth region for the 2011–12 year

Surface water resource

Allocation (ML)

Storage

 

Canning (and Araluen)

37,700

Churchman Brook

3,700

Harvey

9,500

North Dandalup

22,200

Samson Brook

14,540

Serpentine Main and Serpentine Pipehead

53,800

South Dandalup (and Conjurunup)

32,900

Stirling

40,610
Victoria

4,300

Wungong

20,600
Other


Murray River and tributaries (Dwellingup)

167

Murray River and tributaries (Williams)

140
Total

240,157

 

Quantification approach

Data source

Water Resource Licensing database.

Provided by

Department of Water.

Method

The Water Corporation manages the urban water system, which is subject to licence agreements for abstraction of water from the surface water storages. One of the conditions of the licence agreement is that the maximum amount of abstraction 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 storage water levels in the Perth region in October of the reporting year.

The total surface water allocation announcement is assumed to equal 100% of the annual entitlement.

Assumptions, limitations, caveats and approximations

Nil.

Uncertainty information

There is no uncertainty associated with this value.