Perth

This line item refers to the total water allocation for all other surface water supply in the Perth region not related to public water or irrigation schemes.

The volume recognised in the Statement of Changes in Water Assets and Water Liabilities represents the volume of:

• water announced for regulated entitlements
• new licences and other variations that were granted during the 2009-10 reporting period.

The water supply licences are divided into licence entitlement purposes. The annual allocation announcement and the total volume of new licences for each licence purpose for 2009-10 are given in the table below. The figure below shows the percentage of the total volume of surface water allocation for each licence category.

Graph of the percentage of the total surface water allocation for each licence category

Data source

Western Australian Department of Water: Water Resource Licensing database.

Data provider

Western Australian Department of Water.

Method

Most of these licences are usually issued to licence holders for periods of 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.

Uncertainty

Not applicable.

Approximations, assumptions, caveats/limitations

Nil.