OS MasterMap Water Network

© Crown copyright and database rights 2017 Ordnance Survey 0100031673

The OS MasterMap Water Network Layer is a detailed, accurate and up-to-date vector dataset of Great Britain’s water network. The only detailed, heighted water network of Great Britain showing the flow and precise course of rivers, streams, lakes and canals. OS MasterMap Water Network offers the most accurate view of all watercourses across the whole of Great Britain created, in collaboration with the Environment Agency and Scottish Environmental Protection Agency, to a consistent specification and update schedule – so it can help support flood risk management decisions and the sharing of information between national and local organisations. Accurate physical properties of watercourses Model scenarios in 2D and 3D like never before, thanks to the clear and detailed information about river flow, gradient and river widths, along with its precisely mapped course. Understand the underground network Very detailed mapping of a wide range of features from aqueducts to tunnels with full flow direction and for the first time the network of underground watercourses – inferred from the entry and exit points.