5.2 Surface water allocation remaining - urban water system
The volumetric value for the line item for the 2010–11 year was 25 ML. The line item represents surface water allocation remaining for urban water systems in the Murray–Darling Basin (MDB) region as at 30 June 2011.
For the 2010–11 year, only the New South Wales Murray sustainable diversion limit (SDL) area that is within New South Wales Murray and Lower Darling water resources plan (WRP) area reported allocation remaining for the line item. The relevant entitlement class was high security – town water supply.
There were no advanced diversions for urban water systems in the 2010–11 year.
All allocation remaining at the end of the water year is forfeited and therefore allocation remaining is zero for Queensland WRP areas. While carry-over does not apply for urban water systems, most water supply schemes hold water in reserve for high priority urban use in Queensland.
New South Wales
Whilst some New South Wales water sharing plans remain suspended, there has been provision to carry-over high security class remaining allocations in the New South Wales Murray and Lower Darling WRP area.
There was allocation remaining for urban supplies in SDL areas within Victoria. However, reliable information was not available at the data collection stage of the 2011 Account.
All allocation remaining at the end of the water year for urban entitlements is forfeited and therefore allocation remaining is zero for the WRP areas.
Australian Capital Territory
In the Australian Capital Territory, no formal allocation announcement is made to extract water from storages. The allocation announcement for the year is assumed to be equal to the total entitlement volume. The difference between the allocation announcement and the allocation diversion is considered as forfeited. Therefore, allocation remaining (carry-over) was zero for this line item.
Water sharing plans, water resource plans and the water legislation of each state specify the classes of licences that are permitted to carry forward any unused volumes and rules attached to the volume that may be carried forward.Allocation remaining (carry-over) was calculated by the states and provided to the Murray–Darling Basin Authority.
Assumptions, Limitations, Caveats and Approximations
The uncertainty value for the New South Wales data provided in this line item is +/– 10%.
This line item corresponds to line items listed in the following table and reported in the 2010 Account. In the 2011 Account, the following change was made that caused the 2009–10 year value to be restated:
Presentation and classification of the line items has changed since the 2010 Account.
The changes and their respective values are detailed in the following table.
Northern Basin (ML)
Southern Basin (ML)
Whole region (ML)
|Line item names and values reported as at 30 June 2010 in the 2010 Account||7.6 Non-physical surface water asset – other lumped||35||2||37|
|18.104.22.168 Allocation on regulated flows remaining – high security, urban holder||0||847||847|
|8.1.4 Allocation/claim on regulated flows remaining – urban water access entitlement/arrangement||0||0||0|
|22.214.171.124 Allocation on regulated flows remaining – urban holder||0||0||0|
|Total value reported for the 2010 Account (total for line items 126.96.36.199 to 188.8.131.52 less the value for line item 7.6)||–35||845||810|
|Changes in the value reported in the 2010 Account due to regrouping of line items||0||–847||–847|
|Value reported for 30 June 2010 in the 2011 Account||–35||–2||–37|
Changes in the value reported in the 2010 Account due to regrouping of line items were due to the following reason:
The high security entitlement classes within NSW for research, industrial, cultural, community and education were reported under urban line items in the 2010 Account. Remaining allocations associated with these entitlement classes were designated as non-urban and excluded from this line item for the 2011 Account.