Daly
5.2 Surface water allocation remaining - urban water system

Supporting information

The volume recognised in the water accounting statements (3,010 ML) represents the volume of surface water allocation remaining for urban water supply licence entitlements in the Daly region at the end of the 2011–12 year.

The urban water supply licences relate to the following surface water resources:

  • Katherine River for Katherine town supply
  • Copperfield Creek for Pine Creek town supply.

Quantification approach

Data source

Water Resource Licensing database.

Provided by

Department of Land Resource Management.

Method

The water supply licences for Katherine and Pine Creek have a water management year that ends on 30 April. Therefore, the allocation remaining at the end of the 2011–12 year for the Daly region is the unused component of the annual allocation for these urban licences.

The allocation remaining was calculated as shown in the following table.


Volume of surface water allocation remaining for urban water supply at the start and end of the 2011–12 year

 

Account

Volume (ML)

 

Opening balance (at 30 June 2011)1

2,979

add

21.2 Surface water allocation announcement (on 1 May 2012)

3,456

less

17.12 Surface water allocation diversion (up to 30 June 2012)

2,355

less

13.2 Adjustment and forfeiture of surface water allocation (on 30 April 2012)

1,070

 

Closing balance (at 30 June 2012)

3,010

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

Assumptions, limitations, caveats and approximations

Nil.

Uncertainty information

The uncertainty estimate was not quantified.