35.1 Trade of surface water entitlement within region

Supporting Information

Two surface water entitlement trades and a total volume of 58 ML were traded within the Barossa Prescribed Water Resources Area (PWRA) during the 2010–11 year. The remaining surface water resources within the Adelaide region are not currently managed by a water allocation plan and, subsequently, trade and lease of entitlements does not occur.

Surface water trade within the Adelaide region during the 2010–11 year


Barossa PWRA

Volume (ML)

No. of trades

Entire bundled water licence

Change of entitlement holder



Change of entitlement holder area-based






Quantification Approach

Data Source

South Australian Department for Water: Water Information and Licence Management Administration (WILMA) database.

Provided by

South Australian Department for Water.


Trade and lease details were obtained from a WILMA database extract designed to supply the Water Regulations 2008 category 6a (permanent water access entitlement trades) and 6b (temporary water allocation trades and leases) information.

Water access entitlements associated with the Adelaide region's prescribed water resources are bundled, whereby the value of the entitlement is equivalent to the annual volumetric allocation. Trade duration and permanency were used to differentiate between entitlement and allocation trades according to the following table.

Categorisation of entitlement trades and leases


Entitlement or allocation


Trade or lease

Scope of trade

Greater than 1 year

Water access entitlement:     

An ongoing water right specifying a share of the prescribed water resource

Not permanent


Not specified



All authorisation endorsed on the water licence

Change of entitlement holder

Less than 1 year

Water allocation: 

An authorisation to take a specific volume within the financial year

Not permanent


Not specified

Area-based allocations for the Barossa PWRA were converted to volumes using the guidelines on p35 of the Barossa PWRA Water Allocation Plan.

Surface water trades and leases were individually investigated to remove trades and leases that relate to off-channel water licences. Change of entitlement holder refers to when the bundled water licence is modified to reflect a change in the entitlement holder name. The point of take and other authorisations endorsed on the licence are unchanged.

For more information on bundled water licences refer to the Water allocations section of the Contextual information.

Assumptions, Limitations, Caveats and Approximations

The information reported here is different from the Water Trading in South Australia website. This difference is due to:

  • The Water Trading in South Australia website only displays bundled water licence trades and excludes trades where the entitlement holder is changed.
  • Early return of a previous trade is recorded as a negative trade on the Water Trading in South Australia website that offsets the summary values. In this extract the negative trade values are converted to an absolute value and that adds to the summary value.  

The method assumed that irrigation crop area conversion rates stated in Table 15 of the Barossa PWRA Water Allocation Plan represent an equivalent volumetric allocation. Some irrigators can negotiate different conversion rates based on individual circumstances.

Uncertainty Information

The uncertainty estimate was not quantified.