14.1 Adjustment and forfeiture of groundwater allocation

Supporting Information

The volume recognised in the water accounting statements (4,136 ML) represents the allocation forfeited for groundwater entitlements in the Ord region for the 2011 Account. Forfeiture here occurs because the dates of the 'water year' of each allocation do not match the dates of the 2011 Account year.

The water supply licences are divided into licence entitlement purposes. The total volume of forfeited/adjusted allocation for each groundwater licence purpose for the 2010–11 year is given in the table below.

Volume of forfeited/adjusted allocation for each groundwater licence purpose during the 2010-11 year

Licence category

Adjusted/forfeited allocation (ML)



Commercial and institutional


Environment and conservation


Industry and power generation




Parks, gardens and recreation


Stock and domestic




Quantification Approach

Data Source

Department of Water: Water Resource Licensing database and the Water Information database.

Provided by

Department of Water.


Any unused allocation cannot be carried over to a subsequent licence year. For each licensee, the portion of an entitlement that has not been abstracted by the end of its reporting period is forfeited.

The forfeiture is calculated as the total annual allocation for each licence minus total allocation diversion (see Line item 18.11). Entitlements that are terminated during the 2010–11 year are also considered to be forfeitures.

Assumptions, Limitations, Caveats and Approximations

Forfeiture is calculated based on available extraction data. Where the extraction data are estimated, the forfeiture is subject to the same assumptions and limitations of the extraction data. Refer to Line item 18.11 Groundwater allocation extraction.

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 14.1

2011 Account line item

2010 Account line item

Value reported in the 2010 Account (ML)

Value reported in the 2011 Account (ML)

Additional information

14.1 Adjustment and forfeiture of groundwater allocation Adjustment and forfeiture of groundwater allocation – other lumped holders



Change in line item name and number