Spatial Services Digital Topographic Database (DTDB) consists of over 300 different feature types held in 42 tables or layers, representing natural physical and man-made features.
Key elements include:
- Physical contours and elevations
- Cultural features such as buildings, schools and hospitals
- Hydrology features including the coastline and drainage patterns
- Transport features such as road, rail and ferry routes
- Utility features such as electricity transmission lines and pipelines
The data is continuously maintained through a program of data exchanges with many organisations throughout NSW, as well as utilising Spatial Services regularly updated aerial imagery. The data is also used for producing topographical maps for the state.
Data users can arrange to receive the entire DTDB, to receive a subset of tables, or data for select parts of the state.
You can learn more about the DTDB by visiting the NSW Spatial Data Catalogue.
A full description of the data model, the features and the data maintenance can be found in the following documents:
Topographic Data Dictionary (PDF 452.0 KB)
DTDB Feature Reference Guide (PDF 1.2 MB)
DTDB Feature Maintenance Directory (PDF 1.7 MB)
DTDB Product Description (PDF 1.1 MB)
Spatial Services is now providing spatial data as web services. The web services have been released under open access licenses as part of the NSW Government Open Data Policy to support new and innovative uses of NSW Government information.
The web services allow users to access the most up to date information without having to store and maintain it in their own systems or applications. The web services can be used in multiple ways e.g. direct use, mashups, mobile apps and spatial systems.
To purchase topographic datasets go to the Spatial Services portal.
For enquiries about acquiring data from the DTDB, please contact SS-SDS@finance.nsw.gov.au.
For further information on the model and any requests for softcopy documentation, please contact SS-SDS@finance.nsw.gov.au or 02 6332 8410.