Murray–Darling Basin
10.13 Other groundwater increases

Supporting information

The volumetric value for the line item for the 2011–12 year was 2,683,660 ML. The line item represents groundwater assets increases resulting from changes in long term extraction estimates and basic landowner rights within the Murray–Darling Basin (MDB) region (see the following table).


Other groundwater increases in the MDB region in the 2011–12 year
Groundwater resource plan area

Groundwater sustainable diversion limit area

State

Long term extraction estimates (ML)

Basic Landowner Right (ML)

Total (ML)

Code

Name
GW18 New South Wales Border Rivers Alluvium GS32 and GS33 NSW Border Rivers Alluvium and NSW Border Rivers Tributary Alluvium NSW

               8,425

            380

        8,804

GW17 New England Fractured Rock and Northern Basalts GS18 Inverell Basalt NSW

             24,734

         1,073

       25,807

GS22 Liverpool Ranges Basalt NSW

             17,247

         1,828

       19,075

GS37 New England Fold Belt NSW

            190,264

        14,520

     204,784

GS49 Warrumbungle Basalt NSW

               5,170

            540

        5,710

GW16 Eastern Porous Rock GS17 Gunnedah–Oxley Basin MDB  NSW

            199,893

         5,778

     205,671

GS41 Sydney Basin MDB NSW

             60,443

            465

       60,908

GW14 Namoi Alluvium GS40 Peel Valley Alluvium NSW

                     –

               –

               –
GW13 New South Wales Great Artesian Basin Shallow GS34 to GS 36 New South Wales GAB: Surat Shallow, Warrego Shallow and Central Shallow NSW

            403,809

         2,790

     406,599

GW12 Macquarie–Castlereagh Alluvium GS14 Castlereagh Alluvium NSW

                  621

                –

           621

GW11 Lachlan and South Western Fractured Rock GS19 Kanmantoo Fold Belt NSW

            170,421

         8,154

     178,575

Sub-total Northern Basin 1,081,027 35,528 1,116,554
GW11 Lachlan and South Western Fractured Rock GS10 Adelaide Fold Belt NSW 28,149 2,143 30,292
GS 20 Lachlan Fold Belt NSW 771,949 75,464 847,413
GS39 Orange Basalt NSW 15,050 1,158 16,208
GS51 Young Granite NSW 8,770 759 9,529
GW7 Darling Alluvium  GS23 Lower Darling Alluvium NSW 799 730 1,529
GW8 Murray Alluvium GS27 Lower Murray Alluvium (shallow: Shepparton formation) NSW 80,905 988 81,893
GS46 Upper Murray Alluvium NSW 13,708 402 14,109
GW6 Western Porous Rock GS50 Western Porous Rock NSW 530,486 26,747 557,233
GW 2 Goulburn–Murray GS08 Goulburn–Murray (Shepparton Irrigation Region, sedimentary plain, highlands and deep) Vic 0 0 0
GW3 Wimmera–Mallee (groundwater) GS09 Wimmera–Mallee (sedimentary plain, highlands and deep) Vic 0 0 0
GW5 Eastern Mount Lofty Ranges GS04 Marne Saunders (Murray Group limestone and Renmark Group) SA 0 0 0
GW4 SA Murray GS03 Mallee (Pliocene Sands, Murray Group limestone and Renmark Group) SA 8,500 400 8,900
GS05 Peake–Roby–Sherlock (unconfined and confined) SA 0 0 0
Sub-total Southern Basin 1,458,316 108,791 1,567,106
Total for the region 2,539,342 144,318 2,683,660

– = Data not available

Increased long term extraction estimates and basic landowner rights were the result of implementation of new ground water sharing plans during the 2011–12 year.

GW13 New South Wales Great Artesian Basin Shallow water resource plan area includes 2,002 ML for Paroo alluvial and Warrego alluvial groundwater sources (extracted from the Water Sharing Plan for the Intersecting Streams Unregulated and Alluvial Water Sources 2011).

Quantification approach

Data source

  • Jurisdictional groundwater sharing plans
  • New South Wales Office of Water: water access licence statistics 
  • Victorian Permissible Consumptive Volume Groundwater Order 2011 
  • Victorian Water Account 2010–11.

Provided by

Bureau of Meteorology (the Bureau).

Method

Values were extracted from cited data sources.

Assumptions, limitations, caveats and approximations

It has been assumed that groundwater basic right is included in the permissible consumptive volume provided in relevant water sharing plan if no information is available to decide otherwise.

Uncertainty information

The uncertainty estimate was not quantified.

Comparative year

The following changes resulted in the restatement of the 2010–11 year volume:

  • error correction
  • scope change.

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

 

Restatement of comparative year information made for the line item 10.13 Other groundwater increases
Segment 2012 Account volume for the 2010–11 year (ML) 2011 Account volume for the 2010–11 year (ML) Difference due to prior period error correction and scope change (ML)
Northern Basin 80,562 80,562 0
Southern Basin 91,927 65,215 26,712
Whole region 172,489 145,777 26,712


Details of changes made to 2010–11 information are as follows:

  • For the 2011 Account, information for Little Desert groundwater management area in Victoria was not included due to lack of reliable data. The volume for permissible consumptive volume and basic rights, 1,102 ML, for this area is included in the 2012 Account.
  • For the 2011 Account, basic land holder rights and unlicensed stock and domestic rights were not included for Victoria due to lack of reliable data. Volumes for these rights (25,340 ML excluding Little Desert groundwater management area volume) were extracted from the Victorian Water Account for 2010–11 and included in the 2012 Account.
  • Basic landholder rights and unlicensed stock and domestic rights for the Marne Saunders prescribed water resources area in South Australia were not included in the 2011 Account. The respective volume, 270 ML, is included in the 2012 Account.