Ord
6.2 Groundwater allocation remaining – urban water system

Supporting information

The volume recognised in the water accounting statements (2,252 ML) represents the volume of groundwater allocation remaining for urban water supply licence entitlements in the Ord region at the end of the 2011–12 year.

The urban water supply licences relate to groundwater extraction from local bore fields for:

  • Kununurra town supply
  • Halls Creek town supply.

Quantification approach

Data source

Water Resource Licensing database.

Provided by

Department of Water.

Method

The water supply licences for Kununurra and Halls Creek have a water management year that ends on 31 March. Therefore, the allocation remaining at the end of the 2011–12 year for the Ord region is the unused component of the annual allocation for these two urban licences.

The allocation remaining at 30 June 2012 was calculated as shown in the following table.

 

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

 

 

Account

Volume (ML)

 

Opening balance (at 30 June 2011)

2,292

add

22.2 Groundwater allocation announcement (on 1 April 2012)

2,700

less

18.12 Groundwater allocation extraction (up to 30 June 2012)

1,842

less

14.2 Adjustment and forfeiture of groundwater allocation (on 30 March 2012)

898

 

Closing balance (at 30 June 2012)

2,252

Assumptions, limitations, caveats and approximations

Nil.

Uncertainty information

The uncertainty estimate was not quantified.