20230322 15323200 1.0 FALSE 002 AHGFAquiferContour 130.929432 151.640956 -41.241011 -12.157001 1 Geographic GCS_GDA_1994 Angular Unit: Degree (0.017453) <GeographicCoordinateSystem xsi:type='typens:GeographicCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.7'><WKT>GEOGCS[&quot;GCS_GDA_1994&quot;,DATUM[&quot;D_GDA_1994&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433],AUTHORITY[&quot;EPSG&quot;,4283]]</WKT><XOrigin>-400</XOrigin><YOrigin>-400</YOrigin><XYScale>999999999.99999988</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>2.0000000000000001e-09</XYTolerance><ZTolerance>0.00020000000000000001</ZTolerance><MTolerance>0.00020000000000000001</MTolerance><HighPrecision>true</HighPrecision><LeftLongitude>-180</LeftLongitude><WKID>4283</WKID><LatestWKID>4283</LatestWKID></GeographicCoordinateSystem> 150000000 5000 ISO19139 20221130 18221300 20221130 18221300 The aquifer contours dataset has been developed to collate and integrate state and regional aquifer contours datasets across Australia. It provides foundation groundwater data essential for groundwater assessments, management, planning, modelling and research. The data set is intended to be used at the regional to national scale and does not support local scale groundwater applications. <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The aquifer structure contours dataset provides the elevation of the top and bottom of aquifers.</SPAN></P></DIV></DIV></DIV> We request attribution as © Commonwealth of Australia (Bureau of Meteorology) 2022. AHGFAquiferContour - V3.3 2022-11-28T00:00:00 Environmental Prediction Services Bureau of Meteorology, Community Services Group groundwater cartography aquifer contour Australia 113.000139 153.639028 -10.015416 -43.861528 1 external 4ad90a7ff8baeb7aaceb48412a0ccb8f Environmental Prediction Services, Water Information Bureau of Meteorology, Community Services Group True Environmental Prediction Services, Water Information <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Licenced for use under Creative Commons Attribution 4.0 International</SPAN></P></DIV></DIV></DIV> Licenced for use under Creative Commons Attribution 4.0 International Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595 ANZCW0503900114 20221125 external 4ad90a7ff8baeb7aaceb48412a0ccb8f Environmental Prediction Services, Water Information Bureau of Meteorology, Community Services Group True Environmental Prediction Services, Water Information The data model for Geofabric Aquifer Contours dataset was updated to include NAF and aquifer type attributes and to remove Interim Aquifer Framework attributes. The NGIS aquifer contours dataset was loaded into the updated Geofabric Aquifer Contours data model. HydroIDs were assigned to each aquifer feature. Selected attributes were also updated e.g. dates and agency name changes. Detailed processing metadata for the NGIS aquifer contours dataset can be found in the NGIS Data Product Specification: http://www.bom.gov.au/water/groundwater/ngis/documents/NgisProductSpec.pdf AHGFAquiferContour Data sources - GAB Hydrogeological mapping: Structure contours of aquifers, confining beds and equivalents. Compiled by ABARES (1996) - Basin in a Box (MDBA) noting the following issues with the dataset: -- Edge matching - there are significant discrepancies at some map sheet boundaries -- Contour intervals - not all contours are closed, and the intervals between contours are not consistent across the whole theme -- Contour values - in areas of steep gradients some contour values change through the length of the line -- Contour branching – in areas of steep gradient some contours fork - Alice Springs Groundwater (DEPWS) - Daly Basin Groundwater (DEPWS) - Southern Victoria Groundwater Mapping (SRW) - National Groundwater Information System (NGIS) aquifer boundary dataset (Bureau of Meteorology, 2020) - National Aquifer Framework (NAF), version 1.1, (Bureau of Meteorology, 2016) Processing steps Geofabric Version 2 Jurisdictional datasets were initially collated, pre-processed and standardised into a national dataset: Grid to contour conversion for southern Victoria. Correction of attribute for some contours sourced from the Basin in a Box data sets. Data sets were combined into a single ArcInfo coverage and adjusted to align with the national coastline and then converted to a single file geodatabase feature class. Overlapping contours were clipped to their respective aquifer boundary polygon. Geofabric Version 3 Version 2 datasets were aligned to the NAF and new aquifer boundary dataset: File Geodatabase Feature Class 10.3.1 dataset EPSG 8.3.4(3.0.1) 124505 Simple FALSE 124505 TRUE FALSE AHGFAquiferContour Feature Class 124505 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Shape Geometry 0 0 0 Feature geometry. Esri Coordinates defining the features. HydroID HydroID Integer 4 0 0 Feature identifier, unique across all geodatabases within an AHGF release. BoM AHGFFType AHGFFeatureType Integer 4 0 0 Feature type within the AHGF Data Model (e.g. 1 : AHGFNetworkStream). BoM AqifrBndID AquiferBoundaryID Integer 4 0 0 Unique identifier for related AHGFAquiferBoundary feature. BoM AqifrName AquiferName String 254 0 0 Name of Aquifer BoM AqifrProvName AquiferProvName String 254 0 0 Name of groundwater province or basin BoM AqifrType AquiferType Integer 4 0 0 Type of Aquifer (e.g. Upper) BoM ContValue ContourValue Double 8 0 0 Elevation value for contour feature in meters Australian Height Datum (mAHD). BoM ReliabCode ReliabilityCode String 160 0 0 Code indicating the level of reliability or confidence in the data. BoM HGUID HGUID Integer 4 0 0 HGUName HGUName String 254 0 0 Jurisdictional name of Hydro Geological Unit (HGU) BoM HGUNumber HGUNumber Integer 4 0 0 Unique identifier for Hydro Geological Unit (HGU) BoM NafHGUName NafHGUName String 254 0 0 National Aquifer Framework (NAF) name of Hydro Geologic Unit (HGU) BoM NafHGUNumber NafHGUNumber Integer 4 0 0 National Aquifer Framework (NAF) unique identifier for Hydro Geologic Unit (HGU) BoM NafHGCName NafHGCName String 254 0 0 National Aquifer Framework (NAF) name of Hydro Geologic Complex (HGC) BoM NafHGCNumber NafHGCNumber Double 8 0 0 National Aquifer Framework (NAF) unique identifier for Hydro Geologic Complex (HGC) BoM GWNote GroundwaterNote String 254 0 0 Other relevant groudwater related comments concerning feature. BoM Scale Scale String 20 0 0 Scale at which feature was captured (e.g. 1:250,000). BoM SrcDesc SourceDescription Integer 4 0 0 Detailed source description for feature. BoM SrcFCName SourceFeatureClassName String 25 0 0 Feature Class Name from the input data source (e.g. Reservoirs). BoM SrcFType SourceFeatureType String 32 0 0 Feature type from the input data source (e.g. TownRuralStorage). BoM SrcType SourceType Integer 4 0 0 Format of input source data: (1-ArcInfo Coverage; 2-ArcInfo GRID; 3-ESRI Geodatabase; 4-Shapefile). BoM SourceID SourceID Integer 4 0 0 Unique identifier for individual feature in the input data source (e.g. 3023726). FeatRel FeatureReliability Date 8 0 0 Reliability date of spatial object. Adjusted during spatial change/verification. FSource FeatureSource Integer 4 0 0 Name of agency that originally captured the spatial object. BoM AttrRel AttributeReliability Date 8 0 0 Reliability date of attribute object. Adjusted during attribute change/verification. BoM AttrSource AttributeSource Integer 4 0 0 Name of agency that originally captured the attribute object. BoM PlanAcc PlanimetricAccuracy SmallInteger 2 0 0 Standard deviation of the horizontal positional accuracy in metres (e.g. 100). BoM Symbol Symbol SmallInteger 2 0 0 Symbol number for feature used in Geoscience Australia's GEODATA product BoM TextNote TextNote String 50 0 0 Text note to accompany the feature. BoM Shape_Length Shape_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated.