Perth
21.1 Surface water allocation announcements
Supporting Information
This line item refers to the total water allocation for all surface water supply in the Perth region not related to urban water systems or irrigation schemes. It includes surface water allocations to mining, industrial and agricultural sectors.
The volume recognised in the Statement of changes in water assets and water liabilities represents the volume of:
- water announced for surface water allocation; and
- new licences and other variations that were granted during the 2010–11 year.
The water supply licences are divided into licence entitlement purposes. The annual allocation announcement for each licence purpose for the 2010–11 year are given in the following table.
Licence category |
Announcement (ML) |
Agriculture |
4,866 |
Commercial and institutional |
90 |
Industry and power generation |
18,172 |
Mining |
18,918 |
Parks, gardens and recreation |
195 |
Stock and domestic |
250 |
Other |
385 |
Total |
42,876 |
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.
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 |
21.1 Surface water allocation announcements |
25.1.9.7 Allocation announcement on regulated flows–other lumped holders |
43,189 |
43,189 |
Change in line item name and number |