Ord
6.2 Groundwater allocation remaining - urban water system
Supporting Information
The volume recognised in the water accounting statements (2,292 ML) represents the volume of allocation remaining for groundwater entitlements for urban purposes at the end of the 2010–11 year. Allocation remaining occurs because the dates of the 'water year' of each allocation do not match the dates of the 2010–11 year.
This item specifically refers to the volume remaining on 30 June 2011 on two licences held by Water Corporation (WA) for urban supply.
Licensee |
Volume remaining on 30 June 2011 (ML) |
Water Corporation (WA) (Kununurra supply) |
1,684 |
Water Corporation (WA) (Halls Creek supply) |
608 |
Total |
2,292 |
Quantification Approach
Data Source
Provided by
Method
The allocation remaining was calculated as shown in the table below.
|
Account |
Volume (ML) |
|
Opening balance (as at 30 June 2010) |
2,355 |
add |
2,700 |
|
less |
1,774 |
|
less |
14.2 Adjustment and forfeiture of groundwater allocation - urban system |
989 |
|
Closing balance (as at 30 June 2011) |
2,292 |
Assumptions, Limitations, Caveats and Approximations
Uncertainty Information
The uncertainty estimate was not quantified.
Comparative year
The following table compares the value for the 2009–10 year reported in this account with the corresponding value reported in the National Water Account 2010.
2011 Account line item |
2010 Account line item |
Value reported in the 2010 Account (ML) |
Value reported in the 2011 Account (ML) |
Additional information |
6.2 Groundwater allocation remaining - urban water system |
9.1.3.4 Groundwater allocation remaining - urban holder |
2,257 |
2,355 |
Change in line item name and number. Volume restated due to subsequent availability of actual meter readings |
This has been restated because the Bureau used improved licence date information to calculate the remaining allocations on groundwater entitlements and other reconciliation discrepancies as at 30 June 2010.