Ord
5.3 Surface water allocation remaining - irrigation scheme

Supporting Information

The volume recognised in the water accounting statements (282,202 ML) represents the volume of surface water allocation remaining for regulated entitlements for bulk irrigation in the Ord Irrigation Area for the 2011 Account. Irrigation water is sourced from the Main Ord River. Allocation remaining occurs because the dates of the "water year" of each allocation do not match the dates of the 2010-11 year.

Allocation remaining within the irrigation scheme for the Ord Account

Licensee

Volume remaining on 30 June 2011 (ML)

Ord Irrigation Cooperative Limited

279,275

Water Corporation

2,927

TOTAL

282,202

Quantification Approach

Data Source

Department of Water: Water Resource Licensing database and licensee meter readings

Provided by

Department of Water

Method

The allocation remaining was calculated as shown in the table below:

Volume of surface water allocation remaining for the irrigation scheme for the 2011 Account

 

Account

Volume (ML)

 

Opening balance (as at 30 June 2010)

283,843

add

21.3 Surface water allocation announcements

338,100

less

17.13 Surface water allocation diversion

161,155

less

13.3 Adjustment and forfeiture of surface water allocation

178,586

 

Closing balance (as at 30 June 2011)

282,202

Assumptions, Limitations, Caveats and Approximations

Nil.

Uncertainty Information

The uncertainty estimate was not quantified.

Comparative year

The following table compares the value for the 2009–10 year reported in this account with the corresponding value reported in the 2010 Account.

Comparative information from the 2010 Account for line item 5.3

2011 Account line item

2010 Account line item

Value reported in the 2010 Account (ML)

Value reported in the 2011 Account (ML)

Additional information

5.3 Surface water allocation remaining – irrigation scheme

8.1.9.1 Allocation on regulated flows remaining – bulk irrigator holder

284,135

283,843

Change in line item name and number. Volume restated due to subsequent availability of actual meter readings

This has been restated because the Bureau of Meteorology used improved licence date information to calculate the remaining allocations on surface water entitlements as at 30 June 2010. Also, availability of meter readings improved the accuracy of the volume presented.