Ord
5.3 Surface water allocation remaining – irrigation scheme

Supporting information

The volume recognised in the water accounting statements (282,202 ML) represents the surface water allocation remaining for bulk irrigation surface water entitlements within the Ord region at the end of the 2011–12 year. Irrigation water is diverted from the main Ord River channel for supply to the Ord River Irrigation Area.

The irrigation scheme licences relate to the following areas:

  • Ivanhoe and Packsaddle irrigation districts (Ord Irrigation Cooperative)
  • M1 channel (Water Corporation).

Quantification approach

Data source

Water Resource Licensing database.

Provided by

Department of Water.

Method

The two water supply licences for the Ord River Irrigation Area do not have a water management year that ends on 30 June. 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 irrigation licences.

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


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

 

Account

Volume (ML)

 

Opening balance (at 30 June 2011)

282,202

add

21.3 Surface water allocation announcements

338,100

less

17.13 Surface water allocation diversion

155,362

less

13.3 Adjustment and forfeiture of surface water allocation

182,738

 

Closing balance (at 30 June 2012)

282,202

Assumptions, limitations, caveats and approximations

Nil.

Uncertainty information

The uncertainty estimate was not quantified.