Adelaide
20.9 Adjustment and forfeiture of irrigation scheme inter-region claim on water

Supporting information

During the 2011–12 year the volume of River Murray water claimed by Barossa Infrastructure Limited (BIL) (see line item 12.12 'Increase of irrigation scheme inter-region claim on water') decreased by 2,662 ML. This volume included:

  • 2,500 ML of water allocations sold by BIL in June 2012, including 1,700 ML traded to the Victorian lower Murray and 800 ML traded to the Goulburn Murray.

  • forfeiture of 162 ML unused water allocation held by BIL for which carryover was not permitted at 30 June 2012 (see line item 4.2 Irrigation scheme inter-region claim on water).

For more information on the nature of the River Murray water claimed by BIL, see line item 4.2 Irrigation scheme inter-region claim on water.

Quantification approach

Data source

South Australian Department of Environment, Water and Natural Resources (DEWNR) Water Information and Licence Management Administration (WILMA) database.

Provided by

Bureau of Meteorology (the Bureau) and DEWNR.

Method

The total volume of the line item 20.9 (2,662 ML) was calculated according to the table below. Data from the WILMA data base provides that 2,500 ML of water was traded out in June 2012. The difference between 2,662 ML and 2,500 ML represented the volume of unused River Murray water allocation for which carryover was not permitted at 30 June 2012.

 

Calculations of BIL's inter-region claim decrease to River Murray water for the 2011–12 year
Calculation

Line item

Volume (ML)

Opening balance 4.2 Irrigation scheme inter-region claim on water

0

add 12.12 Increase of irrigation scheme inter-region claim on water

6,653

less 12.6 Delivery of water to irrigation scheme under inter-region agreement

3,991

less 20.9 Decrease of irrigation scheme inter-region claim on water

2,662

Closing balance 4.2 Irrigation scheme inter-region claim on water

0

Assumptions, limitations, caveats and approximations

See information given in notes of line items 4.2, 12.12 and 12.6.

Uncertainty information

The uncertainty estimate was not quantified.

Comparative year

This line item corresponds to line item 20.9 'Decrease of irrigation scheme inter-region claim on water' reported in the 2011 Account.