NSW Elevation and Depth Theme - 20M Historical Contours

Export Data Access APINSW Elevation and Depth Theme – Historical\n20m ContoursPlease Note\nWGS 84 service aligned to GDA94\nThis dataset has spatial reference [WGS 84 ≈ GDA94] which may result in\nmisalignments when viewed in GDA2020 environments. A similar service with a\n‘multiCRS’ suffix is available which can support GDA2020, GDA94 and WGS 84 ≈\nGDA2020 environments.\nIn due course, and allowing time for user feedback and testing, it is intended\nthat the original service name will adopt the new multiCRS functionality.Metadata Portal Metadata InformationContent TitleNSW Elevation and Depth Theme - 20M Historical ContoursContent TypeHosted Feature LayerDescription20m Historical Contours are virtual imaginary lines on the ground, joining points of an equal elevation.10m\n Historical Contours were captured in a verity of methods and scales, \ninitially captured at 1:25 000, 1:50 000 and 1:100 000 scales from \nstereoscopic aerial photography or Ortho image trace methods.These\n contours were digitised into the vector data product over a number of \nyears with the processing being completed 2003 through to 2017.Feature reliability date of the original contours rage from 1971 through to 2008.Contours\n are virtual imaginary lines on the ground, joining points of an equal \nelevation in relation to the Australian Height Datum (AHD). A contour \ncan be a standard contour, depression contour or an ancillary contour. \nIt is a part of the NSW Elevation and Depth Theme.Elevation and \nDepth provides an authoritative digital representation of the Earth’s \nsurface enabling evidence based decision making, policy development and \nan essential reference to other foundation datasets.Elevation and Depth underpins:Safe hydrographic, aeronautical and road navigationClimate science, including climate change adaptationEmergency management and natural hazard risk assessmentEnvironmental, including water managementDefinition of maritime and administrative boundariesDefense and national securityNatural resource exploration and exploitation Initial Publication Date03/02/2020Data Currency01/01/3000Data Update FrequencyOtherContent SourceData provider filesFile TypeESRI File Geodatabase (*.gdb)Attribution©\n State of New South Wales (Spatial Services, a business unit of the \nDepartment of Customer Service NSW). For current information go to spatial.nsw.gov.auData Theme, Classification or Relationship to other DatasetsNSW Elevation and Depth Theme of the Foundation Spatial Data Framework (FSDF)AccuracyThis\n dataset was captured by utilising the best available source at a \nvariety of scales and accuracies, ranging from 1:500 to 1:250 000 \naccording to the National Mapping Council of Australia, Standards of Map\n Accuracy (1975). Therefore, the position of the feature instance will \nbe within 0.5mm at map scale for 90% of the well-defined points. That \nis, 1:500 = 0.25m, 1:2000 = 1m, 1:4000 = 2m, 1:25000 = 12.5m, 1:50000 = \n25m and 1:100000 = 50m. A program to upgrade the spatial location and \naccuracy of data is ongoing.  Spatial Reference System (dataset)GDA94Spatial Reference System (web service)EPSG:3857WGS84 Equivalent ToGDA94Spatial ExtentFull StateContent LineageFor additional information, please contact us via the Spatial Services Customer HubData ClassificationUnclassifiedData Access PolicyOpenData QualityFor additional information, please contact us via the Spatial Services Customer HubTerms and ConditionsCreative CommonsStandard and SpecificationAS/NZS ISO 19115 - ANZLIC Metadata Profile Version 1.1AS/NZS ISO 19131:2008 Geographic Information - Data product specificationsOGC compliant Web Map Services (WMS) and Web Feature Services (WFS)Metadata\n for the relevant Spatial Services datasets complies with AS/NZS ISO \n19115-2, ANZLIC Metadata Profile v1.1 and ISO 19139 Intergovernmental \nCommittee on Surveying and Mapping (ICSM): Guidelines for Digital \nElevation DataDCS Spatial Services: Elevation Data Products Specification and Description (LiDAR)DCS Spatial Services: Elevation Data Products Specification and Description (Airborne Photogrammetry)  Data CustodianDCS Spatial Services346 Panorama Ave Bathurst NSW 2795Point of ContactPlease contact us via the Spatial Services Customer HubData AggregatorDCS Spatial Services346 Panorama Ave Bathurst NSW 2795Data DistributorDCS Spatial Services346 Panorama Ave Bathurst NSW 2795Additional Supporting InformationData DictionariesTRIM Number