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NSW Elevation and Depth Theme multiCRS

MultiCRS service - supporting requests in multiple Coordinate Reference Systems - Information Sheet

A new series of ‘multiCRS’ web services have been published to support GDA2020. These new ‘multiCRS’ services:

· have a spatial reference of GDA2020

· support alignment with GDA2020, GDA94 or [WGS 84-aligned-to-GDA2020] GIS environments,
using built-in server-side transformations:

o GDA94 < NTv2-CPD > GDA2020

o GDA94 < NTv2-CPD > WGS 84 aligned to GDA2020

o GDA2020 < NULL > WGS 84 aligned to GDA2020

Note: ESRI software will automatically align by transforming from the sourceSpatialReference (GDA94).
Other software may need to set client-side transformations from the SpatialReference (GDA2020).

Note: Client-side transformation(s) can be used to over-ride these default transformations.

The original [WGS 84-aligned-to-GDA2020] is still available, without the ‘multiCRS’ suffix. In due course, and allowing time for user feedback and testing, it is intended that the original service name will adopt this new multiCRS functionally.

Metadata Portal Metadata Information

Content Title	NSW Elevation and Depth Theme multiCRS
Content Type	Hosted Feature Layer
Description	Elevation and Depth is the measurement of the Earth’s surface above or below a vertical datum to obtain the height of the land. Data is collected using a range of sensors including laser, sonar, radar and optical. Technical methodologies are used to derive spot heights, raster surfaces, contours, triangulated irregular networks and digital elevation models. Datasets that form the Elevation and Depth theme include: Historical Contours (2m Urban, 10m and 20m) Current 2m Contours (State wide) Spot Heights Relative Heights Point cloud (LiDAR and Photogrammetrically derived) (available for download from Geoscience Australia ELVIS Platform) Digital Elevation Model (available for download from Geoscience Australia ELVIS Platform) Elevation Data Sets available from additional services. ELVIS – Elevation and Depth Point Clouds - The point cloud data set consists of point clouds captured from LiDAR (Light Detection and Ranging) and derived from airborne imagery using photogrammetric techniques. Spatial Services Point Cloud data is available for on demand download from Geoscience Australia ELVIS Platform. Digital Elevation Models - Digital Elevation Models (DEM) are derived from Spatial Services’ (SS) point cloud data. The DEM is a bare earth representation of the earth’s surface where all the above ground feature has been removed. Spatial Services have a number of different Digital Elevation Models Digital Elevation Model derived from LiDAR - Are 1m or 2m resolution and is not hydrologically enforced (breaklines) or hydrologically conditioned (identification and analysis of sinks). Digital Elevation Model Derived Photogrammetry - Data is 5m resolution. Areas of no data caused by steep slopes, shadow and vegetation have been interpolated or filled-in with another data source and will not be as accurate as the bare open ground areas. The data is not hydrologically enforced (breaklines) or hydrologically conditioned (identification and analysis of sinks). Spatial Services Digital Elevation Model data is available for on demand download from. Geoscience Australia ELVIS Platform as 2km x 2km tiles. You can also access the 5 Metre Digital Elevation Model Service in the Collaboration Portal. Elevation and Depth provides an accurate representation of the Earth’s surface enabling evidence-based decision making, 3D modelling, planning and earth surface representation. 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 Engineering projects and infrastructure development Definition of maritime and administrative boundaries Natural resource exploration. Update frequencies vary for each dataset. Individual current status can be found under each Spatial data profile. The objective is to maintain elevation datasets to meet the FDSI requirements of key data users. Current programs include: Aerial LiDAR capture program across NSW. DEM and Point Cloud generation from photogrammetric techniques. Longer term programs include: Update of contour data using updated DEM data generated from LiDAR and Photogrammetry. Hydrological enforcement using improved surface models.
Initial Publication Date	05/02/2020
Data Currency	01/01/3000
Data Update Frequency	Daily
Content Source	Data provider files
File Type	ESRI File Geodatabase (*.gdb)
Attribution	© State of New South Wales (Spatial Services, a business unit of the Department of Customer Service NSW). For current information go to spatial.nsw.gov.au
Data Theme, Classification or Relationship to other Datasets	Elevation and Depth Theme of the Foundation Spatial Data Framework (FSDF)
Accuracy	The dataset maintains a positional relationship to, and alignment with, the drainage and topographic digital datasets. These datasets were captured primarily by digitising from the best available aerial photography at scales and accuracies ranging from 1:500 to 1:250 000 according to the National Mapping Council of Australia, Standards of Map Accuracy (1975). Therefore, the position of the feature instance will be within 0.5mm at map scale for 90% of the well-defined points. That is, 1:500 = 0.25m, 1:2000 = 1m, 1:4000 = 2m, 1:25000 = 12.5m, 1:50000 = 25m and 1:100000 = 50m. A program to upgrade the spatial location and accuracy of data is ongoing.
Spatial Reference System (dataset)	GDA94
Spatial Reference System (web service)	Other
WGS84 Equivalent To	GDA2020
Spatial Extent	Full state
Content Lineage	Please contact us via the Spatial Services Customer Hub
Data Classification	Unclassified
Data Access Policy	Open
Data Quality	Please contact us via the Spatial Services Customer Hub
Terms and Conditions	Creative Commons
Standard and Specification	Open Geospatial Consortium (OGC) implemented and compatible for consumption by common GIS platforms. Available as either cache or non-cache, depending on client use or requirement.
Data Custodian	DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795
Point of Contact	Please contact us via the Spatial Services Customer Hub
Data Aggregator	DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795
Data Distributor	DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795
Additional Supporting Information	Data Dictionaries DCS Spatial Services: Elevation Data Products Specification and Description (LiDAR) DCS Spatial Services: Elevation Data Products Specification and Description (Airborne Photogrammetry)
TRIM Number

NSW Elevation and Depth Theme multiCRS

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