Adelaide

The volume reported in the water accounting statement (370 ML) represents groundwater extraction associated with industrial and commercial allocations in the prescribed areas of the Adelaide region: Barossa Prescribed Water Resource Area (PWRA), McLaren Vale Prescribed Wells Area (PWA) and Northern Adelaide Plains PWA. The groundwater extraction for 2009–10 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.

Data provider

South Australian Department for Water.

Method

Groundwater allocations occur in the Barossa PWRA, Northern Adelaide Plains PWA and McLaren Vale PWA. Metered extraction for 2009–10 was obtained from the WILMA licensing database for these areas. licence purpose information was obtained for the Northern Adelaide Plains PWA and Barossa PWRA, but was not available for the McLaren Vale PWA. McLaren Vale PWA industrial and commercial licences were inferred from the bore purpose recorded at the time of construction in the Drillhole Enquiry System.

Some groundwater extraction was unmetered in the Barossa PWRA. Metered groundwater extraction in the Barossa was increased by 20% to account for the unmetered extraction (Department for Water, Planning and Management, pers. comm., 2010).

Uncertainty

Ungraded.

Assumptions, approximations and caveats/limitations

• The purpose at construction recorded within the Drillhole Enquiry System represents the current purpose of the groundwater licences in the McLaren Vale PWA.
• All bores in the McLaren Vale PWA with an industrial or commercial purpose were captured in the Drillhole Enquiry System.
• Bores in the McLaren Vale PWA with an industrial or commercial purpose were used entirely for industrial or commercial use.
• Unmetered groundwater extraction in the Barossa PWRA was assumed to equate to 20% of metered extraction.