Adelaide
13.1 Adjustment and forfeiture of surface water allocation
Supporting information
The volume reported (1,919 ML) is the volume of unused allocated water that was not permitted to be carried over at 30 June 2012 and was therefore forfeited.
During the 2011–12 year, surface water (watercourse) allocation occurred in two areas of the Adelaide region that had water licences on issue:
- North Para River and tributaries, included in the Barossa Prescribed Water Resources Area (PWRA)
- Little Para River Prescribed Watercourse (PWC).
During the 2011–12 year, carryover was permitted in the Barossa PWRA but not on the Little Para River PWC (see line item 5.1 Surface water allocation remaining).
Quantification approach
Data source
Provided by
Method
The volume of water forfeited at the end of the 2011–12 year was calculated as summarised in the table below.
Calculation |
Line item |
Volume (ML) |
Volume available for abstraction (carryover) at the start of the year |
5.1 Surface water allocation remaining (opening balance) |
– |
| add volume of water made available for abstraction during the year (announcement) |
3,412 |
|
less volume of water diverted |
1,116 |
|
| less volume of water permitted to be carried over to the proceeding year |
5.1 Surface water allocation remaining (closing balance) |
377 |
equals |
13.1 Adjustment and forfeiture of surface water allocation | 1,919 |
Assumptions, limitations, caveats and approximations
There was a surface water allocation remaining at the start of the 2011–12 year (see table in 'Method') but it could not be quantified. The omission of this value in the calculation means the volume reported as forfeiture is underestimated.