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OS MasterMap Water Network support

OS MasterMap Water Network is a digital representation of watercourses presented as a series of connected centrelines. It depicts a wide range of features, from aqueducts to tunnels, with full flow direction and other supplementary information.

Share your thoughts about OS MasterMap Water Network in our discussion forum.

How do I obtain OS MasterMap Water Network?

This product is available for commercial licensing – find out how to buy. OSMA members can download it under the terms of this agreement. PSMA members may do so under either commercial or evaluation terms.

What is the OS MasterMap Water Network?

The OS MasterMap Water Network is a detailed network map of Great Britain's watercourse. It has been created to a single consistent specification and a maintained standard.

Find out more details in the Product Guide.

In which file format is the OS MasterMap Water Network supplied?

OS MasterMap Water Network is supplied in GML 3.2.1, which is INSPIRE compliant.

What spatial reference system does OS MasterMap Water Network use?

The OS MasterMap Water Network is projected in the ESPG 7405 OSGB36 / British National Grid + ODN. This projection is used as it specifies the Z value is Ordnance Datum Newlyn.

Does OS MasterMap Water Network work with all the other layers of OS MasterMap?

Yes, it is fully interoperable with all existing layers of OS MasterMap and enables a new generation of analysis, policy development and environmental reporting.

How often is OS MasterMap Water Network updated?

OS MasterMap Water Network is currently updated quarterly.

How much will OS MasterMap Water Network cost?

The license charges for OS MasterMap Water Network are published in the product portfolio price list (PDF).

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