Perth
20.4 Delivery to irrigation scheme users

Supporting Information

This line item refers to the volume of water supplied to consumers of the Harvey Water irrigation scheme.

Quantification Approach

Data Source

Harvey Water: Supervisory Control and Data Acquisition system.

Provided by

Harvey Water.

Method

Volume of water delivered to consumers of the Harvey Water irrigation scheme is the total allocation diversion minus any leakage, as shown in the following table.


Volume of water supplied to consumers of the irrigation scheme during the 2010–11 year

 

 

Volume (ML)

 

12.9 Allocation diversion of surface water to irrigation scheme

32,952

Less

10.7 Leakage to groundwater

2,274

 

Total water delivered

30,678

 

Assumptions, Limitations, Caveats and Approximations

It is assumed that all the water diverted to the irrigation scheme, and not lost via leakage, is entirely consumed by the users.

Uncertainty Information

This value is estimated to be in the range of +/– 5–10%.

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 20.4

2011 Account line item

2010 Account line item

2011 Account volume for the 2009–10 year (ML)

2010 Account volume for the 2009–10 year (ML)

Change from the 2010 Account to the 2011 Account

20.4 Delivery to irrigation scheme users

20.3.1 Application of water from Irrigation water supply system for irrigation

41,088

41,740

Volume restated due to subsequent availability of information from the licence holder (refer to line item 12.10)

Change in line item name and number