Perth
21.1 Surface water allocation announcements
Supporting information
The volume recognised in the water accounting statements (33,886 ML) represents the total water allocation for surface water supply to individual users in the Perth region during the 2012–13 year. The volume comprises:
- water announced for surface water allocation; and
- new licences and other variations that were granted during the 2012–13 year.
This line item refers to all surface water supply in the region not related to urban water systems or irrigation schemes. These water supply licences are divided into licence entitlement purposes. The following figure shows the annual allocation announcement for each licence purpose for the 2012–13 year.
Graph of annual allocation announcement for each licence purpose for the 2012–13 year
Quantification approach
Data source
Provided by
Method
Most of these licences are issued to licence holders for periods of generally between one and ten years, with an annual abstraction amount specified and with annual compliance arrangements in place.
The total surface water allocation announcement is assumed to equal 100% of the annual entitlement.
Assumptions, limitations, caveats and approximations
Uncertainty information
There is no uncertainty associated with this value.