Perth
21.4 Increase of inter-region commitment on surface water
Supporting Information
This line item refers to the annual allocation of water from Helena River (Mundaring Reservoir) to the Kalgoorlie Goldfields, located outside of the Perth region.
Quantification Approach
Data Source
Provided by
Method
Mundaring Reservoir is part of the urban water supply system, so it has the same licence agreements for abstraction of water as the other 13 major storages (see line item 21.2).
The total surface water allocation announcement is assumed to equal 100% of the annual entitlement.
Assumptions, Limitations, Caveats and Approximations
The announced allocation is made after a review, by the Department of Water, of the storage water level of Mundaring Reservoir in October of every year.
Uncertainty Information
There is no uncertainty associated with this value.
Comparative year
The following table presents substantive changes in the line item reported in this 2011 Account with the corresponding line item in the 2010 Account.
2011 Account line item |
2010 Account line item |
2011 Account volume for the 2009–10 year (ML) |
2010 Account volume for the 2009–10 year (ML) |
Change from the 2010 Account to the 2011 Account |
21.4 Increase of inter-region commitment on surface water |
25.6 Other lumped surface water liability increases |
36,300 |
36,300 |
Change in line item name and number |