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Adelaide

                                                                                                   

9.1.3.2 Groundwater entitlement—individual irrigator holder

                             

Supporting information   


The volume reported in the water accounting statement (1,374 ML) represents carryover of groundwater allocations held by individual irrigators at the end of each year. It is presented with the other line items relevant to groundwater irrigation licences in the table below.

Calculation

Line item

Volume (ML)

 

Opening balance (1 July 2009)

9.1.3.2 Groundwater allocation remaining—individual irrigator holder

1,173

add

27.1.3.2 Groundwater allocation announcement—individual irrigator holder

38,225

minus

16.5.3.2 Groundwater allocation extraction—individual irrigator holder

19,926

minus

28.1.3.2 Adjustment and forfeiture of groundwater allocation—individual irrigator holder

18,098

 

Closing balance (30 June 2010)

9.1.3.2 Groundwater allocation remaining—individual irrigator holder

1,374

 

 The breakdown of groundwater irrigation allocation remaining for the prescribed areas within the Adelaide region is provided in the table below.

Management area

2008–09

2009–10

Barossa Prescribed Water Resources Area

NA

–a

McLaren Vale Prescribed Wells Area

1,173

1,374

– = Not available; NA = Not applicable; a = Carryover for 2009–10 had not been quantified in time to be included in the Adelaide region water accounting report.

 

Quantification approach   


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

The McLaren Vale Prescribed Wells Area (PWA) was the only area practising carryover of groundwater allocations (referred to as ‘allocation credits’ by Department for Water) at the end of 2008–09. Carryover for 2008–09 and 2009–10 was extracted from the WILMA licensing database. The purpose of water allocations and carryover is not identified in the McLaren Vale PWA. Instead, irrigation licences were identified from the original purpose assigned to the bore when constructed. This information is recorded within the Drillhole Enquiry System database.

The Barossa Prescribed Water Resources Area (PWRA) began practising carryover of groundwater allocations at the end of 2009–10. Carryover had not been calculated for Barossa at the time the Adelaide region water accounting report was compiled and could not be included.

 

Uncertainty

Ungraded.

 

Assumptions, approximations and caveats/limitations

  • The current purpose of the groundwater licence is the same as when the bore was constructed and recorded in the Drillhole Enquiry System.
  • All bores with an irrigation purpose were captured in the Drillhole Enquiry System.
  • Bores with an irrigation purpose were used entirely for irrigation use.
  • Carryover occurred in the Barossa PWRA at the end of 2009–10, but had not been calculated at the time the Adelaide region water accounting report was compiled.