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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.

Technical information

Read our technical specification for OS Open Rivers.