OS MasterMap Topography Layer's Descriptive terms will update over 11 million features across land, rivers, water and structures. See a full list of newly identifiable features in our Excel guide or request the sample data
Improved descriptive terms attribution allows you to identify, interrogate and visualise more features than ever before!
There will be a staged roll-out of descriptive terms into the main MasterMap Topography Layer product.
Identify agricultural land, foreshore, saltmarsh and others to more accurately describe your land cover and terrain
Assess value and risk by evaluating land use, water, structures and specific features in your area of interest
Detailed water features and foreshore, substations, structures, for risk analysis and fast access in an emergency
We’re adding 76 new descriptive terms, such as bridge, level crossing and wind turbine. With 11 million more real-world features identified, you can tag and analyse your assets more precisely.
Through the creation of the descriptive group of 'structure', individual built features can now be identified and categorised. From emergency telephones and bridges to wind turbines and telecommunications masts, a wide range of features are becoming available.
A brand new descriptive term, this will be applied to areas of land with the main purpose of growing crops or keeping livestock. Along with additional foreshore and land-fill descriptive term attributes, this makes land use much clearer.
The updated descriptive terms give a clearer depiction of tidal range. Where high and low tide are coincident (e.g in docks used by larger ships, which are always full), the descriptive terms for Mean High Water (Springs) will appear with Mean Low Water (Springs) or other features such as Groyne or Building Outline.
We’re introducing new styling options for both current and upgraded Topography Layer including style sheets in SLD, LYR and QML formats.
These are available on GitHub, supported by version control, user guides and release notes.
We’ve been working with our partners and software vendors to ensure they’re ready for these changes. If you create your own software or systems to translate Topography Layer, this change could affect you, so please test this sample data.
This sample data covers two areas - Exeter and Hampshire/Isle of Wight.
For existing OS Partners please contact the partner team to request your sample data
If you need any additional help with sample data, please contact our Customer Services team.