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OS Open Rivers support

If you need a high-level view of watercourses in Great Britain, OS Open Rivers is for you – and it's completely free.

Getting started

OS Open Rivers is a generalised product which has been automatically derived from Ordnance Survey large scale data.

Product overview (PDF)

Read our overview for OS Open Rivers for a summary of the product with guidelines and advice on how to derive the maximum benefit from the product.

Getting started with GeoPackage (PDF)

This guide helps you to get started using GeoPackage - a lightweight format that can contain large amounts of complex data in a single, easy to distribute and ready to use file.

Technical information

Read our technical specification for OS Open Rivers.