Data

Great Artesian Basin Groundwater recharge zones and whole of basin boundaries 2022

Geoscience Australia

Ransley, T. ; Kilgour, P.

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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.26186/147503&rft.title=Great Artesian Basin Groundwater recharge zones and whole of basin boundaries 2022&rft.identifier=10.26186/147503&rft.publisher=Commonwealth of Australia (Geoscience Australia)&rft.description=The Great Artesian Basin (GAB) Groundwater Recharge Zones and Extent Boundary 2022 dataset provides Geoscience Australia’s latest interpretation of the extent of: · the GAB and its four component geological sub-basins – the Eromanga, Carpentaria, Surat and Clarence-Moreton basins; and · the GAB aquifer outcrop/subcrop areas that comprise the groundwater recharge zones of the GAB.These datasets are an updated regional interpretation for mapping at approximately 1:1 000 000 to produce a broad scale overview, and examination of small areas by collecting extra data is most likely to produce results that differ from this regional interpretation.The GAB Groundwater Recharge Zones and Extent Boundary 2022 data compilation comprises the following:1. GAB extent boundaries 2022 · GAB_Basin_2022 – polygon covering the extent of the of the Great Artesian Basin as defined by Geoscience Australia · GAB_SubBasins_2022 – polygon dataset defining the extents of the component geological sub-basins of the GAB: Eromanga Basin, Surat Basin, Carpentaria Basin and Clarence-Moreton · GAB_Basin_BoundarySource_2022 – line dataset containing information on the different data sources used to define the boundary of the GAB and sub-basin subdivisions.2. GAB Groundwater Recharge Zones 2022 · GAB_RechargeZones_2022 – polygon dataset depicting areas of recharge within the GAB · GAB_RechargeZones_2022.lyr – group layer file containing: · GAB_RechargeZones_2022_geology (symbolised by geology type) · GAB_RechargeZones_2022_aquifer (symbolised by GAB aquifer) · GAB_RechargeZones_2022_cover (symbolised by qualitative cover classes) · GAB_RechargeZones_2022_source (symbolised by datasets utilised to determine recharge zones), 1. Great Artesian Boundaries Basin boundariesThe GAB boundary follows the geological margins of its four component sub-basins – the Eromanga, Carpentaria, Surat and Clarence-Moreton sub-basins (GAB_SubBasins_2022). In certain areas the boundary diverges from these geological basin margins and dissects outcropping geological units, delineating externally-draining groundwater regions not flowing into the GAB. In these areas the boundary is based on interpreted groundwater divides, indicated by topographic divides, derived from the 1 second SRTM (Gallant et al. 2011). 2. Groundwater recharge zone boundariesThis dataset contains the mapped outcrop and subcrop extents of the regional aquifers of the GAB that constitute the groundwater recharge zones of the GAB. Groundwater recharge zones delineate areas where water infiltrates the aquifers of the GAB. The spatial extents of the recharge zones are defined by a combination of the outcrop extents of aquifer units, and interpolation between outcrops, in cases where the units are covered by a veneer of unconsolidated deposits.The numerous geological units that comprise the aquifers of the GAB are grouped into the following regional aquifers (in age order):· Winton-Mackunda Aquifer and Equivalents· Cadna-owie – Hooray Aquifer and Equivalents· Adori-Springbok Aquifer· Birkhead Formation partial aquifer· Hutton Aquifer and Equivalents· Boxvale Sandstone Member Aquifer· Precipice Aquifer and EquivalentsThe Groundwater recharge zones have been modified from Ransley et al., 2015 to incorporate revised geology mapping for QLD and NSW (refer to metadata available with download).References:Gallant, J., Wilson, N., Dowling, T., Read, A., Inskeep, C. 2011. SRTM-derived 1 Second Digital Elevation Models Version 1.0. Record 1. Geoscience Australia, Canberra. https://pid.geoscience.gov.au/dataset/ga/72759Ransley, T., Radke, B., Kellett, J., Bell, J., Stewart, G 2015. Great Artesian Basin - Groundwater/aquifer recharge zones. Geoscience Australia, Canberra. http://pid.geoscience.gov.au/dataset/ga/81687Maintenance and Update Frequency: asNeededStatement: 1. Hydrogeological boundariesThe Great Artesian Basin boundary has been modified from the GAB Hydrogeology and Extent Boundary (Ransley et al., 2015a) to incorporate revised geological mapping and new hydrogeological interpretations for extensive areas of QLD and NSW and a small portion of SA. 2. Groundwater recharge zone boundaries were created to calculate the surface area of the GAB regional aquifers outcrop and sub-crop, to calculate volumetric annual groundwater recharge estimates. This dataset is a revision of the groundwater/aquifer recharge zones (Ransley et al., 2015b) and delineates the extent of aquifer units that outcrop/subcrop, forming the aquifer recharge areas of the GAB.Refer to the MetaData_GAB_BoundariesRechargeZones_2022.doc for more detail.References:Ransley, T., Radke, B., Kellett, J., Bell, J., Stewart, G 2015a. Great Artesian Basin - Hydrogeology and Extent Boundary. Geoscience Australia, Canberra. https://pid.geoscience.gov.au/dataset/ga/81672Ransley, T., Radke, B., Kellett, J., Bell, J., Stewart, G 2015b. Great Artesian Basin - Groundwater/aquifer recharge zones. Geoscience Australia, Canberra. http://pid.geoscience.gov.au/dataset/ga/81687&rft.creator=Ransley, T. &rft.creator=Kilgour, P. &rft.date=2026&rft.coverage=westlimit=132.10; southlimit=-33.10; eastlimit=152.50; northlimit=-10.80; projection=GDA94 / geographic 2D (EPSG: 4283)&rft.coverage=westlimit=132.10; southlimit=-33.10; eastlimit=152.50; northlimit=-10.80; projection=GDA94 / geographic 2D (EPSG: 4283)&rft_rights=Creative Commons Attribution 4.0 International Licence https://creativecommons.org/licenses/by/4.0/&rft_rights=© Commonwealth of Australia (Geoscience Australia) 2026&rft_rights=Australian Government Security Classification System https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_subject=geoscientificInformation&rft_subject=recharge beds&rft_subject=groundwater&rft_subject=Great Artesian Basin&rft_subject=boundaries&rft_subject=Groundwater hydrology&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data

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Full description

The Great Artesian Basin (GAB) Groundwater Recharge Zones and Extent Boundary 2022 dataset provides Geoscience Australia’s latest interpretation of the extent of:

· the GAB and its four component geological sub-basins – the Eromanga, Carpentaria, Surat and Clarence-Moreton basins; and

· the GAB aquifer outcrop/subcrop areas that comprise the groundwater recharge zones of the GAB.

These datasets are an updated regional interpretation for mapping at approximately 1:1 000 000 to produce a broad scale overview, and examination of small areas by collecting extra data is most likely to produce results that differ from this regional interpretation.

The GAB Groundwater Recharge Zones and Extent Boundary 2022 data compilation comprises the following:

1. GAB extent boundaries 2022

· GAB_Basin_2022 – polygon covering the extent of the of the Great Artesian Basin as defined by Geoscience Australia

· GAB_SubBasins_2022 – polygon dataset defining the extents of the component geological sub-basins of the GAB: Eromanga Basin, Surat Basin, Carpentaria Basin and Clarence-Moreton

· GAB_Basin_BoundarySource_2022 – line dataset containing information on the different data sources used to define the boundary of the GAB and sub-basin subdivisions.

2. GAB Groundwater Recharge Zones 2022

· GAB_RechargeZones_2022 – polygon dataset depicting areas of recharge within the GAB

· GAB_RechargeZones_2022.lyr – group layer file containing:

· GAB_RechargeZones_2022_geology (symbolised by geology type)

· GAB_RechargeZones_2022_aquifer (symbolised by GAB aquifer)

· GAB_RechargeZones_2022_cover (symbolised by qualitative cover classes)

· GAB_RechargeZones_2022_source (symbolised by datasets utilised to determine recharge zones),

1. Great Artesian Boundaries Basin boundaries

The GAB boundary follows the geological margins of its four component sub-basins – the Eromanga, Carpentaria, Surat and Clarence-Moreton sub-basins (GAB_SubBasins_2022). In certain areas the boundary diverges from these geological basin margins and dissects outcropping geological units, delineating externally-draining groundwater regions not flowing into the GAB. In these areas the boundary is based on interpreted groundwater divides, indicated by topographic divides, derived from the 1 second SRTM (Gallant et al. 2011).

2. Groundwater recharge zone boundaries

This dataset contains the mapped outcrop and subcrop extents of the regional aquifers of the GAB that constitute the groundwater recharge zones of the GAB.

Groundwater recharge zones delineate areas where water infiltrates the aquifers of the GAB. The spatial extents of the recharge zones are defined by a combination of the outcrop extents of aquifer units, and interpolation between outcrops, in cases where the units are covered by a veneer of unconsolidated deposits.

The numerous geological units that comprise the aquifers of the GAB are grouped into the following regional aquifers (in age order):

· Winton-Mackunda Aquifer and Equivalents

· Cadna-owie – Hooray Aquifer and Equivalents

· Adori-Springbok Aquifer

· Birkhead Formation partial aquifer

· Hutton Aquifer and Equivalents

· Boxvale Sandstone Member Aquifer

· Precipice Aquifer and Equivalents

The Groundwater recharge zones have been modified from Ransley et al., 2015 to incorporate revised geology mapping for QLD and NSW (refer to metadata available with download).

References:

Gallant, J., Wilson, N., Dowling, T., Read, A., Inskeep, C. 2011. SRTM-derived 1 Second Digital Elevation Models Version 1.0. Record 1. Geoscience Australia, Canberra. https://pid.geoscience.gov.au/dataset/ga/72759

Ransley, T., Radke, B., Kellett, J., Bell, J., Stewart, G 2015. Great Artesian Basin - Groundwater/aquifer recharge zones. Geoscience Australia, Canberra. http://pid.geoscience.gov.au/dataset/ga/81687

Lineage

Maintenance and Update Frequency: asNeeded

Statement:

1. Hydrogeological boundaries

The Great Artesian Basin boundary has been modified from the GAB Hydrogeology and Extent Boundary (Ransley et al., 2015a) to incorporate revised geological mapping and new hydrogeological interpretations for extensive areas of QLD and NSW and a small portion of SA.

2. Groundwater recharge zone boundaries were created to calculate the surface area of the GAB regional aquifers outcrop and sub-crop, to calculate volumetric annual groundwater recharge estimates. This dataset is a revision of the groundwater/aquifer recharge zones (Ransley et al., 2015b) and delineates the extent of aquifer units that outcrop/subcrop, forming the aquifer recharge areas of the GAB.

Refer to the MetaData_GAB_BoundariesRechargeZones_2022.doc for more detail.

References:

Ransley, T., Radke, B., Kellett, J., Bell, J., Stewart, G 2015a. Great Artesian Basin - Hydrogeology and Extent Boundary. Geoscience Australia, Canberra. https://pid.geoscience.gov.au/dataset/ga/81672

Ransley, T., Radke, B., Kellett, J., Bell, J., Stewart, G 2015b. Great Artesian Basin - Groundwater/aquifer recharge zones. Geoscience Australia, Canberra. http://pid.geoscience.gov.au/dataset/ga/81687

Notes

Purpose
The Great Artesian Basin groundwater recharge zones and boundary extent were updated as part of the 'Assessing the Status of Groundwater in the Great Artesian Basin’ project, which was funded by the Australian Government through offsets from the former National Water Infrastructure Development Fund.

Issued: 19 02 2026

This dataset is part of a larger collection

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text: westlimit=132.10; southlimit=-33.10; eastlimit=152.50; northlimit=-10.80; projection=GDA94 / geographic 2D (EPSG: 4283)

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Other Information

Download the dataset (zip) [79.9 MB]

url : https://d28rz98at9flks.cloudfront.net/147503/147503_00_1.zip External Link

Great Artesian Basin - Hydrogeology and Extent Boundary

local : 81672

Great Artesian Basin - Groundwater/aquifer recharge zones

local : 81687

Identifiers

DOI : 10.26186/147503
URL : pid.geoscience.gov.au/dataset/ga/147503
global : 4d41c25a-244f-4dd8-a578-7e4a9cc2bda7