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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.

User guide (PDF)

Read our user guide and technical specification for OS Open Rivers.

OS Open Rivers support FAQs

Technical information

Read our technical specification for OS Open Rivers.


Key FeaturesWhat this product offers
FormatGML 3.2, Esri Shape file
Data structureVector points and lines
AttributesWatercourse name; watercourse type; direction of water flow
Scale1:15 000 to 1:30 000
Update frequencyTwice a year - April and October
SupplyDownload only
CoverageGreat Britain