Perth
5.2 Surface water allocation remaining – urban water system
Supporting information
This line item volume (119 ML) represents the volume of surface water allocation remaining for urban water supply licence entitlements in the Perth region at the end of the 2012–13 year.
Quantification approach
Data source
Provided by
Method
For all but one of the 12 surface water urban supply licences, the licensed water management year is 1 July–30 June. For these licences, any unused allocation at the end of the water management year is forfeited and therefore the allocation remaining at the end of the reporting period is zero.
The water supply licence for Dwellingup has a water management year that ends at 30 September. Therefore, the allocation remaining at the end of the 2012–13 year for the Perth region is the unused component of the annual allocation for the Dwellingup water resource.
The allocation remaining at 30 June 2013 was calculated as shown in the following table.
|
Dwellingup account |
Volume (ML) |
|
Opening balance (at 1 July 2012) |
119 |
add |
Allocation announcement (at 1 Oct 2012) (see line item 21.2) |
167 |
less |
Abstraction up to 30 June 2013 (see line item 17.12) |
0 |
less |
Forfeiture (at 30 Sept 2012) |
167 |
|
Closing balance (at 30 June 2013) |
119 |