2.5 Other groundwater assets
The volumetric value for the line item for the 2011–12 year was 4,013,615 ML for the Murray–Darling Basin (MDB) region. The line item represents sustainable diversion limits that include long-term estimates of volumes for extraction, basic land holder rights or unlicensed stock and domestic rights (where these are not included in the long term extraction estimates in the water resource plan) and for New South Wales the volume of supplementary access licence that was available for use in the 2011–12 year.
Following two tables provide a summary and a breakdown of volumetric details of the line item. More details about the groundwater asset volumes and other data within the region are available in the Groundwater regional note.
|Groundwater resource plan area||State/Territory||Groundwater asset volume1 as at 30 June 2012 (ML)||Groundwater asset volume2 as at 30 June 2011 (ML)|
|GW19||Qld Border Rivers||Qld||–||–|
|GW18||New South Wales Border Rivers Alluvium||NSW||8,804||0|
|GW17||New England Fractured Rock and Northern Basalts||NSW||255,376||0|
|GW16||Eastern Porous Rock||NSW||266,579||0|
|GW13||New South Wales Great Artesian Basin Shallow||NSW||406,599||0|
|GW11||Lachlan and South Western Fractured Rock||NSW||178,575||0|
|Sub-total Northern Basin||1,548,941||440,728|
|GW11||Lachlan and South Western Fractured Rock||NSW||903,442||0|
|GW6||Western Porous Rock||NSW||557,233||0|
|GW5||Eastern Mount Lofty Ranges||SA||11,426||11,426|
|Sub-total Southern Basin||2,464,674||913,498|
|Total for the region||4,013,615||1,354,226|
– = Data not available
1–2 Water table, underlying or combined aquifers
|Groundwater resource plan area||
Groundwater sustainable diversion limit area
Groundwater asset volume as at 30 June 2012 (ML)
Groundwater asset volume as at 30 June 2011 (ML)
|GW18 New South Wales Border Rivers Alluvium||GS32 and GS33||NSW Border Rivers Alluvium and NSW Border Rivers Tributary Alluvium||Water Sharing Plan for the NSW Border Rivers Unregulated and Alluvial Water Sources 2012||NSW||8,804||–|
|GW17 New England Fractured Rock and Northern Basalts||GS18||Inverell Basalt||Water Sharing Plan for the NSW Murray– Darling Basin Fractured Rock Groundwater Sources 2011||NSW||25,807||–|
|GS22||Liverpool Ranges Basalt||Water Sharing Plan for the NSW Murray– Darling Basin Fractured Rock Groundwater Sources 2011||NSW||19,075||–|
|GS37||New England Fold Belt||Water Sharing Plan for the NSW Murray– Darling Basin Fractured Rock Groundwater Sources 2011||NSW||204,784||–|
|GS49||Warrumbungle Basalt||Water Sharing Plan for the NSW Murray– Darling Basin Fractured Rock Groundwater Sources 2011||NSW||5,710||–|
|GW16 Eastern Porous Rock||GS17||Gunnedah–Oxley Basin MDB||Water Sharing Plan for the NSW Murray– Darling Basin Porous Rock Groundwater Sources 2011||NSW||205,671||–|
|GS41||Sydney Basin MDB||Water Sharing Plan for the NSW Murray– Darling Basin Porous Rock Groundwater Sources 2011||NSW||60,908||–|
|GW15 Gwydir Alluvium||GS24||Lower Gwydir Alluvium||Water Sharing Plan for the Lower Gwydir Groundwater Source 2003||NSW||40,954||42,946|
|GW14 Namoi Alluvium||GS29||Lower Namoi Alluvium||Water Sharing Plan for Upper and Lower Namoi Groundwater Sources 2003||NSW||97,654||99,741|
|GS40||Peel Valley Alluvium||Water Sharing Plan for Peel Valley Regulated, Unregulated, Alluvium and Fractured Rock||NSW||80,562||80,562|
|GS47||Upper Namoi Alluvium||Water Sharing Plan for Upper and Lower Namoi Groundwater Sources 2003||NSW||141,236||145,258|
|GW13 New South Wales Great Artesian Basin Shallow||GS34 to GS 36||NSW Great Artesian Basin Surat Shallow, Warrego Shallow and Central Shallow||Water Sharing Plan for the NSW Great Artesian Basin Shallow Groundwater Sources 2011||NSW||406,599||–|
|GW12 Macquarie–Castlereagh Alluvium||GS14||Castlereagh Alluvium||Water Sharing Plan for the Castlereagh (below Binnaway) Unregulated and Alluvial Water Sources 2011||NSW||621||–|
|GS26||Lower Macquarie Alluvium||Water Sharing Plan for Lower Macquarie Groundwater Sources 2003||NSW||71,981||72,221|
|GW11 Lachlan and South Western Fractured Rock||GS19||Kanmantoo Fold Belt||Water Sharing Plan for the NSW Murray– Darling Basin Fractured Rock Groundwater Sources 2011||NSW||178,575||–|
|GS10||Adelaide Fold Belt||Water Sharing Plan for the NSW Murray– Darling Basin Fractured Rock Groundwater Sources 2011||NSW||30,292||–|
|GS 20||Lachlan Fold Belt||Water Sharing Plan for the NSW Murray– Darling Basin Fractured Rock Groundwater Sources 2011||NSW||847,413||–|
|GS39||Orange Basalt||Water Sharing Plan for the NSW Murray– Darling Basin Fractured Rock Groundwater Sources 2011||NSW||16,208||–|
|GS51||Young Granite||Water Sharing Plan for the NSW Murray– Darling Basin Fractured Rock Groundwater Sources 2011||NSW||9,529||–|
|GW7 Darling Alluvium||GS23||Lower Darling Alluvium||Water Sharing Plan for the Lower Murray–Darling Unregulated and Alluvial Water Sources 2011||NSW||1,529||–|
|GW10 Lachlan Alluvium||GS25||Lower Lachlan Alluvium||Water Sharing Plan for Lower Lachlan Groundwater Source 2003||NSW||124,743||126,867|
|GW9 Murrumbidgee Alluvium||GS28||Lower Murrumbidgee Alluvium (deep; Calivil formation and Renmark Group)||Water Sharing Plan for Lower Murrumbidgee Groundwater Source 2003||NSW||287,478||291,598|
|Lower Murrumbidgee Alluvium (shallow; Shepparton formation)||Water Sharing Plan for Lower Murrumbidgee Groundwater Source 2003||NSW||13,000||13,000|
|GW8 Murray Alluvium||GS27||Lower Murray Alluvium (deep: Renmark Group and Calivil formation, and shallow: Shepparton formation)||Water Sharing Plan for Lower Murray Groundwater Source||NSW||205,344||133,137|
|GS46||Upper Murray Alluvium||Water Sharing Plan for Murray Unregulated and Alluvial||NSW||14,109||–|
|GW6 Western Porous Rock||GS50||Western Porous Rock||Water Sharing Plan for the NSW Murray– Darling Basin Porous Rock Groundwater Sources 2011||NSW||557,233||–|
|Sub-total New South Wales||3,655,819||1,005,330|
|GW2 Goulburn–Murray||GS08||Goulburn–Murray (Shepparton Irrigation Region, sedimentary plain, highlands and deep)||Alexandra groundwater management area (GMA)
|Katunga water supply protection area (WSPA)
|Loddon Highlands WSPA||Vic.||21,955||21,955|
|Lower Campaspe Valley WSPA||Vic.||57,231||57,231|
|Lower Ovens GMA||Vic.||29,018||29,018|
|Mid Goulburn GMA||Vic.||15,312||15,312|
|Mid Loddon GMA||Vic.||37,906||37,906|
|Shepparton Irrigation Region WSPA||Vic.||3,456||3,456|
|Upper Ovens River WSPA||Vic.||4,646||4,646|
|GW3 Wimmera–Mallee (groundwater)||GS09||Wimmera–Mallee (sedimentary plain, highlands and deep)||Balrootan GMA||Vic.||30||30|
|Kaniva WSPA and TCSA GMA||Vic.||1,248||1,248|
|Little Desert GMA||Vic.||1,102||1,102|
|Telopea Downs WSPA
|GW5 Eastern Mount Lofty Ranges||GS01||Angas Bremer (Quaternary sediments and Murray Group limestone)||Angas–Bremer prescribed wells area (PWA)
|GS04||Marne Saunders (Murray Group limestone and Renmark Group)||Marne Saunders prescribed water resources area (PWRA)
|GW4 SA Murray||GS03||Mallee (Pliocene Sands, Murray Group limestone and Renmark Group)||Noora PWA||SA||5,138||5,138|
|GS03||Mallee (Pliocene Sands, Murray Group limestone and Renmark Group)||Mallee PWA Water Allocation Plan 2000||SA||62,400||53,500|
|GS05||Peake–Roby–Sherlock (unconfined and confined)||Peake, Roby and Sherlock PWA||SA||5,983||5,983|
|Sub-total South Australia||84,947||76,047|
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.
Volumes provided in the above tables are based on information available at the sources (see 'Data source') at the data collection stage for the 2012 Account. It is likely that any subsequent changes to groundwater information in the water resource planning areas after the data collection stage have not been included in the above tables. In addition, sustainable diversion limit (SDL) areas other than included in the above tables do exist and may be relevant to the line item; however, relevant information was not available for the 2012 Account. For example, SDL areas for which approved groundwater plans are not available (i.e. the annual extraction limit has not been set by a water resource plan) are not included for the line item.
No information on groundwater asset volumes was available for Queensland and the Australian Capital Territory areas within the MDB region.
More information on basic rights within the MDB region is included in line item 18.7 Extraction: other statutory rights.
- NSW Office of Water: water access licence statistics
- jurisdictional groundwater plans
- Victorian Permissible Consumptive Volume Groundwater Order 2011
- Victorian Water Account 2010–11.
The extractable volume of groundwater has been estimated as the sum of the following attributes as stated in the relevant groundwater plan, if there was such plan in place during the 2011–12 year:
- long-term estimates of volumes for extraction
- basic land holder rights or unlicensed stock and domestic rights (where these are not included in the long term extraction estimates in the water resource plan)
- for New South Wales the volume of supplementary access licence that was available for use in the 2011–12 year.
If a plan commenced after 30 June 2012, it was excluded from the account. Where a plan was abolished after 30 June 2011, the value of the plan in effect for the 2011–12 year was included in the 2012 Account.
Basic landowner rights are added to the long-term annual extraction limits for those plans that do not include this extractable volume in the plan extraction limit to get an estimate of what is legally extractable from the aquifers. In addition, for New South Wales the volume of supplementary access licences for the 2011–12 year was included to better reflect the total volume of water that can be extracted from the aquifer for the 2011–12 year.
Assumptions, limitations, caveats and approximations
The basic landowner rights were considered as those at the commencement of the groundwater plan.
The uncertainty estimate was not quantified.
The following changes resulted in the restatement of the 2010–11 year volume:
- prior period error correction
- scope change.
The changes and their respective values are detailed in the following table.
2012 Account volume at 30 June 2011 (ML)
2011 Account volume at 30 June 2011 (ML)
Difference due to prior period error correction and scope change (ML)
Details of changes made to 2010–11 information are as follows:
- Supplementary entitlement volumes have been updated in the 2012 Account for Lower Gwydir, Lower Macquarie and Lower Lachlan alluviums. As a result, respective decrease of asset volume was 204 ML.
- For the 2011 Account, information for Little Desert GMA in Victoria was not included due to lack of reliable data. The volume (permissible consumptive volume and basic rights), 1,102 ML, for this area is included in the 2012 Account.
- For the 2011 Account, basic landholder 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 GMA 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 PWRA in South Australia were not included in the 2011 Account. The respective volume, 270 ML, is included in the 2012 Account.
All above listed changes except asset decrease for Lower Gwydir (193 ML) and Lower Macquarie (2 ML) apply to the Southern Basin.