NSW Elevation and Depth Theme - 10M Historical Contours

Access APINSW Elevation and Depth Theme – Historical 10m ContoursPlease Note WGS 84 service aligned to GDA94 This dataset has spatial reference [WGS 84 ≈ GDA94] which may result in misalignments when viewed in GDA2020 environments. A similar service with a ‘multiCRS’ suffix is available which can support GDA2020, GDA94 and WGS 84 ≈ GDA2020 environments. In due course, and allowing time for user feedback and testing, it is intended that the original service name will adopt the new multiCRS functionally.

10m Historical Contours are virtual imaginary lines on the ground, joining points of an equal elevation.10m Historical Contours were captured in a verity of methods and scales,  initially captured at 1:25 000, 1:50 000 and 1:100 000 scales from stereoscopic aerial photography or Ortho image trace methods.These contours were digitised into the vector data product over a number of years with the processing being completed 2003 through to 2017. Feature reliability date of the original contours rage from 1971 through to 2008.Contours are virtual imaginary lines on the ground, joining points of an equal elevation in relation to the Australian Height Datum (AHD). A contour can be a standard contour, depression contour or an ancillary contour. It is a part of the NSW Elevation and Depth Theme.Elevation and Depth provides an authoritative digital representation of the Earth’s surface enabling evidence based decision making, policy development and an essential reference to other foundation datasets.Elevation and Depth underpins:·               safe hydrographic, aeronautical and road navigation

·               climate science, including climate change adaptation

·               emergency management and natural hazard risk assessment

·               environmental, including water management

·               definition of maritime and administrative boundaries

·               defence and national security

·               natural resource exploration and exploitation

 Metadata

Type  

Esri Feature Service

Update Frequency  

As required   

Contact Details  

Contact us via the Spatial Services Customer Hub

Relationship to Themes and Datasets  

Elevation and Depth Theme of the Foundation Spatial Data Framework

Accuracy 

Spatial Accuracy Horizontal: +/-1.25 @95% Confidence Interval Spatial Accuracy Vertical: +/-0.9 @95% Confidence Interval Calibration certification (Manufacturer/Cert. Company): DCS,  Spatial Services.

Spatial Reference System  (dataset) 

Geocentric Datum of Australia 1994 (GDA94), Australian Height Datum (AHD)  

Spatial Reference System     (web service)  

EPSG 4326: WGS 84 Geographic 2D  

WGS 84 Equivalent To

GDA94  

Spatial Extent  

Full State  

Standards and Specifications  

AS/NZS ISO 19115 - ANZLIC Metadata Profile Version 1.1 AS/NZS ISO 19131:2008 Geographic Information - Data product specificationsOGC compliant Web Map Services (WMS) and Web Feature Services (WFS)Metadata for the relevant Spatial Services datasets complies with AS/NZS ISO 19115-2, ANZLIC Metadata Profile v1.1 and ISO 19139 Intergovernmental Committee on Surveying and Mapping (ICSM): Guidelines for Digital Elevation Data.DCS Spatial Services: Elevation Data Products Specification and Description (LiDAR)DCS Spatial Services: Elevation Data Products Specification and Description (Airborne Photogrammetry)

Distributors  

Service Delivery, DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795

Dataset Producers and Contributors  

Administrative Spatial Programs, DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795