Adelaide

The volume reported in the water accounting statement (38,225 ML) represents the allocation for groundwater irrigation licences issued for the three prescribed areas in the Adelaide Region: Barossa Prescribed Water Resource Area (PWRA), McLaren Vale Prescribed Wells Area (PWA) and Northern Adelaide Plains PWA. The 2009–10 allocation is itemised by management area in the table below.

Data source

South Australian Department for Water: Water Information and Licensing Management Application (WILMA) database and Drillhole Enquiry System.

Adelaide and Mount Lofty Ranges Natural Resources Management Board (AMLRNRMB): Barossa Water Allocation Plan (AMLRNRMB 2009).

Data provider

South Australian Department for Water.

Method

Groundwater irrigation allocations for 2009–10 were obtained from the WILMA database for water management areas in the Adelaide region: Barossa Prescribed Water Resources Area (PWRA), McLaren Vale Prescribed Wells Area (PWA) and Northern Adelaide Plains PWA.

Licence purpose information was obtained for the Northern Adelaide Plains PWA and Barossa PWRA, but was not available for the McLaren Vale PWA. For the McLaren PWA, irrigation licences were identified from the bore purpose recorded at the time of construction in the Drillhole Enquiry System.

Allocations for the Barossa PWRA are area-based and were converted to volumes using the guidelines in the Barossa Water Allocation Plan.

Uncertainty

Nil.

Assumptions, approximations and caveats/limitations

• The method assumed that irrigation crop conversion rates represent an equivalent volumetric allocation.
• Some irrigators can negotiate different conversion rates based on individual circumstances.