Daly
14.2 Adjustment and forfeiture of groundwater allocation - urban water system

The volume recognised in the water accounting statements (3,291 ML) represents the total forfeiture of water allocations for urban groundwater entitlements in the Daly region during the 2011–12 year.

The urban water supply licences relate to groundwater extraction from the Tindall aquifer for Katherine town supply.

Water Resource Licensing database.

Department of Land Resource Management.

The portion of groundwater allocation that has not been abstracted at the end of the 2011–12 year is forfeited, i.e. there is no carry-over of entitlements into next year's account.

The water supply licences for Katherine town supply have a water management year that ends on 30 April. Therefore, the forfeiture reported for the urban licences are calculated as the total annual allocation less the total allocation extraction between 1 May 2011 and 30 April 2012, as shown in the following table.

1. Volumes are based on data for the 2010–11 year, which are not reported in the water accounting statements

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 18.12).

The uncertainty estimate was not quantified.