NSW Base Map Web Service GDA2020

GDA2020 Cached Map Tile service - See GDA2020 Web Services Information Sheet and GDA2020 Raster FAQ

This Cached Map Tile service is published with a spatial reference of WGS 84-aligned-to-GDA2020). For users who require a [WGS 84-aligned-to-GDA94] service the original NSW Base Map Web Service is still available.

Disclaimer: This Cached Map Tile service is created directly from the GDA94 Cached Map Tile service by simply shifting pixels by a distance equivalent to the GDA94 > NTv2-CPD > GDA2020 transformation. This shift must be a whole number of pixels. As a result, where raster tiles are provided at low-resolution, the display location may differ from true GDA2020 location. For example, a tile at ‘zoom level 18’, with 60 cm pixel resolution, may appear offset from GDA2020 by ~30cm.

The NSW Base Map web service depicts a map of NSW using layers from the Digital Topographic Database, the Geocoded Urban and Rural Addressing System database and the Digital Cadastral Database.

This includes:
• roads
• points of interest
• localities
• landform
• drainage
• cultural data
• parks and forests
• property boundaries
• street address numbers.

Web service uses/fitness for purpose This web service allows users to easily integrate a NSW base map into Open Geospatial Consortium (OGC) compliant spatial platforms and applications. This web service provides an ideal base map depicting a combined view of NSW Foundation Spatial Information for use within spatial applications and systems.

Current State This web service is current and complete. Update frequency As required.

Future development This web service is updated when new information has been captured or sourced by DFSI Spatial Services.

Standards and specifications OGC compliant and suitable for consumption by common GIS platforms.

This dataset is compliant with the NSW Foundation Spatial Data Framework and its specifications.

Metadata

Type	Esri Map Service
Update Frequency	As required
Contact Details	Contact us via the Spatial Services Customer Hub
Relationship to Themes and Datasets	The NSW Base Map is made up from elements from NSW Administrative Boundaries, Land Parcel Property, Water, Transport and Geocoded Address Themes as well as Features of Interest and Physiography Categories of the Foundation Spatial Data Framework (FSDF) Boundaries
Accuracy	The dataset maintains a positional relationship to, and alignment with, a range of themes from the NSW FSDF including, transport, imagery, positioning, water and land cover. This dataset was captured by digitising the best available cadastral mapping 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 of positional upgrade (accuracy improvement) is currently underway.
Source Spatial Reference (dataset)	Geocentric Datum of Australia 1994 (GDA94), Australian Height Datum (AHD)
Spatial Reference     (web service)	EPSG 4326: WGS 84 Geographic 2D
WGS 84 Equivalent To	GDA2020
Spatial Extent	Full state
Standards and Specifications	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.
Distributors	Customer Experience & Insights, 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