OS MasterMap Water Network Layer

OS MasterMap Networks - Water Layer | Data Products | OSOrdnance Survey

OS MasterMap Water Network Layer is a three-dimensional digital representation of Great Britain's watercourses. The product includes rivers, streams, lakes, lochs and canals as a series of watercourse network lines. The network lines (links) are attributed to provide a range of information about the section of watercourse they depict. OS MasterMap Water Network Layer will significantly enhance systems used to manage waterways and rivers and the flood risk they pose.

This product is updated quarterly in January, April, July and October.

OS MasterMap Water Network Layer map.

Features

Content and context

With this water network data, you can look up the height of any watercourse, along with its flow direction, gradient, length and width anywhere along its length.

Precise watercourses details

As an island, water defines Great Britain. No other visualisation of our nation’s watercourses details the heights of watercourses in relation to sea level with this level of precision.

Complete picture in 2D and 3D

For planners, for surveyors, for engineers – this layer offers the potential to model in 2D and 3D like never before, thanks to the clarity of river flow, gradient and river widths.

Answers on tap

From aqueducts to tunnels, with annotations of flow direction, OS MasterMap Water Network Layer provides useful detailed mapping that includes underground watercourses (inferred from entry and exits).

Detailed centre line

OS MasterMap Water Network Layer provides a detailed centre line following the curve of the waterway precisely. It includes the coordinates of watercourse sources and where they meet, exactly.

Summary

• Access: Download

• Category: Networks

• Data theme: Water

• Data structure: Vector – Topologically structured link and node network

• Coverage: Great Britain

• Scale: 1:1 250 to 1:10 000

• Format: GML 3.2.1, GeoPackage, vector tiles

• Ordering area: All of Great Britain or customisable areas (5km² tiles)

• Publication months: January, April, July, October

• OS Data Hub plan: Energy & Infrastructure Plan, Premium Plan, Public Sector Plan

How to get this product

Access to this product is free for Public Sector Geospatial Agreement (PSGA) Members. Find out if you are a PSGA Member or download a sample of OS MasterMap Water Network Layer data by accessing the product page on the OS website, which has links to all of the relevant resources. Alternatively, you can try out the full product by applying for a Data Exploration license.

Visualise OS MasterMap Water Network Layer data online

This product is available to try out online using one of our three sets of sample data (Exeter, Newport and Inverness) through the OS MasterMap Product Viewer:

OS MasterMap Product Viewer

Interactive demonstrator of OS MasterMap Generation data