Perth
5.3 Surface water allocation remaining - irrigation scheme

Supporting Information

This line item represents the volume of surface water allocation remaining for irrigation supply licence entitlements at the end of the 2010–11 year.

Quantification Approach

Data Source

Department of Water: Water Resource Licensing database, Harvey Water: Supervisory Control and Data Acquisition system.

Provided by

Department of Water.

Method

For each surface water irrigation scheme supply licence, the licensed water management year is from 1 July to 30 June. At the end of the water management year, any unused allocation is forfeited. Therefore, the allocation remaining on 30 June 2011 is zero, as shown in the following table.


Volume of surface water allocation remaining for the irrigation scheme at the start and end of the 2010–11 year

 

Account

Volume (ML)

 

Opening balance (as at 30 June 2010)

0

add

21.3 Surface water allocation announcements

33,620

less

17.13 Surface water allocation diversion

32,952

less

13.3 Adjustment and forfeiture of surface water allocation

668

 

Closing balance (as at 30 June 2011)

0

 

Assumptions, Limitations, Caveats and Approximations

Nil.

Uncertainty Information

The uncertainty estimate was not quantified.

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.


Comparative year information for line item 5.3

2011 Account line item

2010 Account line item

2011 Account volume at 30 June 2010 (ML)

2010 Account volume at 30 June 2010 (ML)

Change from the 2010 Account to the 2011 Account

5.3 Surface water allocation remaining - irrigation scheme

8.1.2.1 Allocation on regulated flows remaining–high security, bulk irrigator holder

0

0

Change in line item name and number