Survey Mark - NSW Positioning Theme - GDA2020 Service

Please Note

WGS 84 = GDA2020 service

This dataset has a spatial reference of [WGS 84 = GDA2020] and can NOT be easily consumed into GDA94 environments. A similar service with a ‘multiCRS’ suffix is available which can support GDA2020, GDA94 and WGS84 = GDA94 environments. In due course, and allowing time for user feedback and testing, it is intended that these original services will adopt the new multiCRS functionality.

Metadata Portal Metadata Information

Content Title	Survey Mark - NSW Positioning Theme - GDA2020 Service
Content Type	Hosted Feature Layer
Description	The NSW Survey Marks web service is a dynamic map of permanent survey marks that constitute the state control survey. The positioning data under the NSW Foundation Spatial Data Framework (FSDF) is fed to the web service by the Survey Control Information Management System (SCIMS), the database that contains the single source of truth for all marks within the state control survey network. This service provides GDA2020 coordinates, heights and related information for NSW survey marks that form the official State control survey network (as reported in SCIMS), plotted in their GDA2020 locations (equivalent to WGS84@2020). This service controls the precision of numerical output in a manner that mirrors SCIMS Online. The web service provides a wealth of data on each mark, including: Mark type (Permanent Mark, State Survey Mark, etc.) Mark number Horizontal coordinates and their accuracy (class and order) Heights and their accuracy (class and order) Status of the mark (destroyed, restricted access, etc.) The mark type is represented using various shapes and the accuracy of the mark (both vertical and horizontal) is communicated by the colour. This web service allows users to easily integrate survey control mark data from SCIMS into Open Geospatial Consortium (OGC) compliant spatial platforms and applications. Data provided by the NSW Survey Mark web service can be used in a variety of engineering and surveying applications, including but not limited to: Cadastral survey planning Flood studies and hydrographic modelling Infrastructure development Site calibration at construction sites Elevation modelling Preservation of survey infrastructure. The NSW Survey Mark web service gives users an alternative method to access state control survey data that can be incorporated into their GIS package without needing to log into SCIMS Online. Please note that SCIMS Online is the official option for obtaining state control survey data for cadastral surveys as it offers legal traceability. SCIMS online is accessible via the Spatial portal.
Initial Publication Date	24/03/2020
Data Currency	01/01/3000
Data Update Frequency	Other
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	NSW Positioning Theme of the Foundation Spatial Data Framework (FSDF)
Accuracy	This dataset was captured by utilising the best available source at a variety of 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. This dataset depicts the location of survey marks based on their official GDA2020 coordinates. Survey mark positional accuracy is reported in the data fields for each mark and varies from mark to mark. Over time mark accuracy will change when new observations are added, and survey adjustments are completed. For additional information, please contact us via the Spatial Services Customer Hub
Spatial Reference System (dataset)	GDA2020
Spatial Reference System (web service)	Other
WGS84 Equivalent To	GDA2020
Spatial Extent	Full State
Content Lineage	For additional information, please contact us via the Spatial Services Customer Hub
Data Classification	Unclassified
Data Access Policy	Open
Data Quality	High. Methodology and accuracy standards are defined in the NSW Surveyor General’s directions. For additional information, 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. The web service is built as per Spatial Services project specification.
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

Survey Mark - NSW Positioning Theme - GDA2020 Service

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