18.7 Extraction - other statutory rights
The volumetric value for the line item for the 2010–11 year was 23,683 ML. The line item represents groundwater extractions made under other statutory rights. The other statutory rights include land owner basic rights, riparian rights and stock and domestic rights.
The following table provides detailed volumetric information on groundwater extraction under other statutory rights in the region.
|Groundwater resource plan area||
Groundwater sustainable diversion limit area
Volume (ML) for the 2010–11 year
|GW16 Gwydir Alluvium||GS29||Lower Gwydir Alluvium||NSW||700|
|GW15 Namoi Alluvium||GS34||Lower Namoi Alluvium||NSW||3,304|
|GS45||Peel Valley Alluvium||NSW||4,292|
|GS51||Upper Namoi Alluvium||NSW||2,832|
|GW12 Macquarie–Castlereagh Alluvium||GS31||Lower Macquarie Alluvium||NSW||1,730|
|Sub-total Northern Basin||12,858|
|GW10 Lachlan Alluvium||GS30||Lower Lachlan Alluvium||NSW||4,000|
|GW9 Murrumbidgee Alluvium||GS33||Lower Murrumbidgee Alluvium (shallow: Shepparton Formation and deep: Calivil Formation and Renmark Group)||NSW||4,000|
|GW8 Murray Alluvium||GS32||Lower Murray Alluvium (shallow: Shepparton Formation and deep: Renmark Group and Calivil Formation)||NSW||1,525|
|GW4 SA Murray||GS3||Mallee (Pliocene Sands, Murray Group Limestone and Renmark Group)||SA||700|
|GS5||Peake – Roby – Sherlock (confined and unconfined)||SA||600|
|Sub-total Southern Basin||10,825|
|Total for the region||23,683|
The above table provides information about New South Wales and South Australia. Sustainable diversion limit (SDL) areas not shown in the table may have values relevant to the line item, however, relevant information was not available for the 2011 Account. No information was available to be reported from Queensland or Australian Capital Territory as there are currently no approved groundwater sharing plans for these jurisdictions.
In Victoria, there is a private statutory right to groundwater for domestic and stock purposes. This is associated with an approval to construct a bore and there are no formal volumes assigned to these rights.
Extractions were extracted from the relevant clauses in the jurisdictional groundwater management plans.
Assumptions, Limitations, Caveats and Approximations
The Murray–Darling Basin Authority assumed that the volume of groundwater extracted under other statutory rights is the same as the water requirements estimated for these rights at the commencements of the water management plans.The volume reported for groundwater extracted under other statutory rights is likely to be underestimated as limited data was available.
This line item corresponds to line item 16.4.1 Groundwater extraction – Stock and domestic basic right, reported in the 2010 Account. In the 2011 Account, the following change was made that caused the 2009–10 year value to be restated:
The scope of the line item was changed: groundwater extraction in Mallee Prescribed Wells Area as information extracted from Water Allocation Plan 2000 which is applicable for the area was included in the 2011 Account.
The changes and their respective values are detailed in the following table.
|2010 Account line items||
Volume for the 2009–10 year reported in the 2010 Account (ML)
Difference due to scope change (ML)
Volume for the 2009–10 year reported in the 2011 Account (ML)
|16.4.1 Groundwater extraction – stock and domestic basic right||Northern Basin||8,566||0||8,566|