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Flooding crisis highlights importance of height data

OS Terrain 5 was a valuable asset for organisations managing the UK flooding crisis in February 2014, particularly Network Rail who received the data under the Ordnance Survey Mapping for Emergencies service. They joined a growing number of customers gaining real value from the addition of the third dimension to desktop analysis.

Brighton rail network – interaction of height data with topography

Network Rail has been using OS Terrain 5 to identify risks to their assets. By identfying potentially compromised embankments, bridges, water bodies and vegetation within close proximity to their network, they are able to more accurately target ground surveys.

Terrain 5 Hill shaded grid showing networks in Exeter

We are continuing to enrich OS Terrain in 2014, with the addition of hill summits and our water network to further improve flood modelling capabilities.

We launched OS Terrain 5 and OS Terrain 50 (available free to use through OS OpenData) grid and contour height models in 2013. This is the first output from our 3D strategy.

No other height product offers explicit modelling of road, rail and large water bodies, together with the consistency and synchronicity with our large-scale data.

OS Terrain 5 product information

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