Perth
6.2 Groundwater allocation remaining – urban water system

Supporting information
Quantification approach

Supporting information

This line item volume (0 ML) represents the volume of groundwater allocation remaining for urban water supply licence entitlements in the Perth region at the end of the 2012–13 year.

Quantification approach

Data source

Water Resource Licensing database and licensee meter readings.

Provided by

Department of Water.

Method

The licensed water management year for all bore fields within the Perth region is 1 July–30 June. For these licences, any unused allocation at the end of the water management year is forfeited; therefore, the allocation remaining at the end of the reporting period is zero, as shown in the following table.

Volume of groundwater allocation remaining for the urban water system at the start and end of the 2012–13 year
	Account	Volume (ML)
	Opening balance (at 1 July 2012)	0
add	22.2 Groundwater allocation announcements	151,005
less	18.12 Entitled extraction of allocated groundwater	139,622
less	14.2 Adjustment and forfeiture of groundwater allocation	11,383
	Closing balance (at 30 June 2013)	0

Assumptions, limitations, caveats and approximations

Nil.

Uncertainty information

The uncertainty estimate was not quantified.