Murray-Darling Basin
33.3 Groundwater access entitlement for allocation extraction

Supporting Information

The volumetric value for the line item for the 2010–11 year was 1,406,832 ML. The line item includes groundwater entitlement or other arrangement that may produce a groundwater liability within the Murray–Darling Basin (MDB) region.  The following table presents breakdown information for the line item value on sustainable diversion limit (SDL) area basis.

 

Groundwater access entitlement for allocation extraction in the MDB region as applicable in the 2010–11 year
Groundwater resource plan area

SDL area  

 State 

 Volume (ML) 

Code

Name

Non-urban

Urban

Supplementary

Total

GW16 Gwydir Alluvium GS29 Lower Gwydir Alluvium NSW 28,858 3,572 13,930 46,360
GW15 Namoi Alluvium GS34 Lower Namoi Alluvium NSW 81,594 4,407 20,874 106,875
GS45 Peel Valley Alluvium NSW 9,946 104  n/a  10,050
GS51 Upper Namoi Alluvium NSW 109,612 6,280 37,783 153,675
GW12 Macquarie–Castlereagh Alluvium GS31 Lower Macquarie Alluvium NSW 65,458 3,090 2,396 70,944
Sub-total Northern Basin 295,468 17,453 74,983 387,904
GW10 Lachlan Alluvium GS30 Lower Lachlan Alluvium NSW 105,678 2,322 21,238 129,238
GW9 Murrumbidgee Alluvium GS33 Lower Murrumbidgee Alluvium (deep: Calivil Formation and Renmark Group) NSW 268,104 2,230 41,196 311,530
GS33 Lower Murrumbidgee Alluvium (shallow: Shepparton Formation) NSW 5,201 na  na  5,201
GW8 Murray Alluvium GS32 Lower Murray Alluvium (Deep: Renmark Group and Calivil Formation) NSW 83,493 79 48,454 132,026
GW2 Goulburn–Murray GS08 Goulburn–Murray Vic 383,453 na na 383,453
GW3 Wimmera–Mallee (groundwater) GS09 Wimmera–Mallee Vic 29,497 na na 29,497
GW5 Eastern Mount Lofty Ranges GS01 Angas Bremer (Murray Group Limestone) SA 6,500 na na 6,500
  Marne Saunders (Fractured Rock) SA 2,000 na na 2,000
  Marne Saunders (Murray Group Limestone) SA 1,600 na na 1,600
GS04 Marne Saunders (Renmark Group) SA 500 na na 500
GW4 SA Murray GS03 Mallee (Murray Group Limestone) SA 5,138 na na 5,138
Mallee (Renmark Group) SA 6,862 na na 6,862
  Peake – Roby – Sherlock (confined) SA 2,168 na na 2,168
GS05 Peake – Roby – Sherlock (unconfined) SA 3,215 na na 3,215
Sub-total Southern Basin 903,409 4,631 110,888 1,018,928
Total for the region 1,198,877 22,084 185,871 1,406,832

na = not applicable

 

The table provides information about New South Wales, Victoria and South Australia.  Other jurisdictions for which information about groundwater entitlement not able to be separately classified are:

  • Australian Capital Territory – no groundwater management units from the Australian Capital Territory are being reported in this account

  • Queensland – no information available to be reported.

Other supporting information:

  • The South Australian – Victorian Border Groundwaters Agreement (Government of South Australia 2005) is supported by legislation in both States. It provides for equitable sharing in the border zone, which extends from the coast to the Murray and is a 40 km wide zone centred on the border. The states agree on setting permissible consumptive volumes (PCVs) and other requirements within this zone. Various alluviums selected for reporting are either within or partly within this border zone. These are the Murrayville Water Supply Protection Area (WSPA), Kaniva Tertiary Confined Sand Aquifer (TCSA) and Telopia Downs WSPA in Victoria, and Mallee Prescribed Wells Area and Tintinara–Coonalpyn prescribed wells area in South Australia. These are State groundwater management units and licensed entitlements and extractions are included within the state groundwater management unit – not within the border zone. Therefore, separate reporting on the border zone is not needed and would be double-counting.

  • The Tintinara–Coonalpyn prescribed wells area is not included as part of this region. It is not considered to be part of the MDB resources and is excluded by Water Act regulations from the MDB.

 

Quantification Approach

Data Source

Jurisdictional water sharing plans and other data sources for groundwater resources listed under Method.

Provided by

Murray–Darling Basin Authority.

Method

Extracted/calculated from following jurisdictional water sharing plans and other data sources for groundwater resources.

 Water sharing plans for groundwater resource plan areas:

  • Water Allocation Plan for the Angas–Bremer Prescribed Wells Area

  • Water Allocation Plan for the Noora Prescribed Wells area

  • Water Allocation Plan for the Peake, Roby and Sherlock Prescribed Wells Area

  •  Water Sharing Plan for Lower Lachlan Groundwater Source 2003

  • Water Sharing Plan for Lower Macquarie Groundwater Sources 2003

  • Water Sharing Plan for Lower Murray Groundwater Source

  • Water Sharing Plan for Lower Murray Shallow Groundwater Source

  • Water Sharing Plan for Lower Murrumbidgee Groundwater Source 2003

  • Water Sharing Plan for Murray Unregulated and Alluvial

  • Water Sharing Plan for New South Wales Great Artesian Basin Shallow Groundwater

  • Water Sharing Plan for New South Wales MDB Fractured Rock Groundwater

  • Water Sharing Plan for New South Wales MDB Porous Rock Groundwater

  • Water Sharing Plan for Peel Valley Regulated, Unregulated, Alluvium and Fractured Rock

  • Water Sharing Plan for the Castlereagh River (below Binnaway) Unregulated and Alluvial

  • Water Sharing Plan for the Lower Gwydir Groundwater Source 2003

  • Water Sharing Plan for the Lower Murray–Darling Unregulated and Alluvial

  • Water Sharing Plan for Upper and Lower Namoi Groundwater Sources 2003.

Other data sources:

  • Campaspe Water Supply Protection Area Groundwater Management Plan – Goulburn–Murray Water Resource Plan Area

  • Groundwater (Border Agreement Act) 2006 (Victoria) – Wimmera–Mallee (groundwater) Water Resource Plan Area

  • Katunga Water Supply Protection Area Groundwater Management Plan – Goulburn–Murray Water Resource Plan Area

  • Marne Saunders Prescribed Water Resources Area

  • Mid Loddon Groundwater Management Area – Local Management Rules June 2009 – Goulburn–Murray Water Resource Plan Area

  • Permissible consumptive volume groundwater order 2011 – Draft Telopea Downs Water Supply Protection Area Groundwater Management Plan – Wimmera–Mallee (groundwater) Water Resource Plan Area

  • Permissible consumptive volume groundwater order 2011 – Murrayville Water Supply Protection Area Groundwater Management Plan - Wimmera-Mallee (groundwater) Water Resource Plan Area

  • Permissible consumptive volume groundwater order 2011 – Wimmera–Mallee (groundwater) Water Resource Plan Area

  • Shepparton Irrigation Region Water Supply Protection Area Groundwater Management Plan – Goulburn–Murray Water Resource Plan Area.

Assumptions, Limitations, Caveats and Approximations

The entitlement volumes reported are the initial volumes of the water sharing plans. The actual volumes of entitlements during the 2010–11 year period may be different from the initial volumes on issue at the time of the water plans' commencement, due to conversions between classes or issue of new entitlements. Note that trade (ownership transfer), water savings projects or buy back of entitlements for environmental purpose do not change the volume entitled within a class but only its ownership.

Uncertainty Information

The uncertainty estimate was not quantified.

 

Comparative year

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:

  • Improved data sets were made available after the publication of the 2010 Account. Restatement of the value published in the 2010 Account was made as the difference was material and increased the accuracy of the information provided to the users of the National Water Account.

The changes and their respective values are detailed in the following table.

 

Restatement of comparative year information made for the line item 33.3 Groundwater access entitlement for allocation extraction
Description

Northern Basin (ML)

Southern Basin (ML)

Whole region (ML)

Line item names and values reported as at 30 June 2010 in the 2010 Account R2.2.1 Stock and domestic class 0 324 324
R2.2.2 Urban class 17,299 4,631 21,930
R2.2.3.7 Other lumped holders 355,046 970,490 1,325,536
Total value reported for the 2010 Account 372,345 975,445 1,347,790
Changes in the value reported in the 2010 Account due to availability of improved data sets  5,509 38,097 43,606
Value reported for 30 June 2010 in the 2011 Account  377,854 1,013,542 1,391,396