Perth

This line item refers to the total forfeiture of water allocations for the major reservoirs that supply water to the irrigation system.

Data source

Western Australian Department of Water: Water Resource Licensing database.

Data provider

Western Australian Department of Water.

Method

The portion of a regulated entitlement that has not been abstracted at the end of the reporting period is forfeited. That is, there is no carryover of entitlements into the next reporting period.

The forfeiture is calculated as the total annual allocation minus total allocation diversion, as shown in the table below.

Uncertainty

Ungraded.

Approximations, assumptions, caveats/limitations

Nil.