Global Flood Maps
Our global flood maps provide flood extents and depths for multiple return periods across a range of flood sources.
HIGH QUALITY FLOOD MAPS
Our global flood maps provide flood extents and depths for multiple return periods, covering both river and surface water flooding, as well as coastal flooding in some countries. This allows for a consistent and comprehensive view of global flood hazard.
We constantly strive to improve our maps through new data, research and innovation. We go to great lengths to ensure we are using the highest quality elevation data, which is a key input to any flood map. We offer 30m global flood maps for every country in the world, as well as 5m flood maps for the UK, US and Continental Europe, providing a more granular view of the risk in urban areas and areas prone to surface water (pluvial) flooding.
Our UK flood maps include mapping of six flood types: river, surface water, coastal, groundwater, dam break and canal failure, giving you a very comprehensive view of your risk.
Continuous improvement
By distinguishing between different types of flooding and using 2D hydraulic modelling, we are able to simulate complex flooding to create our flood maps. Our commitment to quality, innovation and a regular programme of updates means we are trusted implicitly to supply the best quality data to our clients.
We're committed to ensuring our clients can access our data in a way that suits them. Our global flood maps are platform agnostic and available:
- In-house directly from JBA
- Via our wide range of resellers
- As part of a consultancy service to help identify exposure hotspots, run per-risk flood assessments and manage accumulations
Get in touch today to find out more about our leading global flood maps. You can also read our full executive briefing which provides an overview of our global flood maps.
Spotlight – South Korea Flood Map
Over the last decade, South Korea has experienced severe flood events which have affected both communities and infrastructure. The mountainous terrain and densely populated urban centres — like Seoul, Incheon, and Busan — make understanding flood risk challenging but ever more essential for managing and mitigating flood hazard.
JBA has just updated its South Korea Flood Map to reflect the most current insights and methodologies. This latest version delivers clearer, more detailed mapping — helping you better understand and manage flood risk across the region.
What’s new in the update?
- Enhanced methodology: Improved approach to better differentiate flooding between river and surface water in combination with new land use and terrain data has transformed the clarity and detail of the mapping.
- More flood defences identified: Identification of new defences with a total 446 in this year’s update – more than 3 times as many as the previous flood map and offering greater insight to the extents of flood protection.
- Rigorous expert review: Extensive expert review and adjustment to fine tune the flood map detail and produce high quality maps.
Recent Flood Map Updates
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Canada Flood Map
The latest biennial Canada flood map includes new digital terrain data, enhanced land use intelligence and expanded mapping of defended areas with a focus on key urban areas.
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Chile Flood Map
Now features updated DTM, land use, and flood extent data, focusing on regions where 97% of the population lives – including Santiago, Puente Alto, Temuco, and Antofagasta.
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Colombia Flood Map
Offers greater precision through new terrain data, improved floodplain detail, and updates to land use and defence mapping. Urban focus includes Bogotá, Medellín, Barranquilla, and Cali.
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Peru Flood Map
Delivers a clearer national picture with new DTM data, refined river and surface water classifications, and expanded land use and defence information.
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Brazil Flood Map
Includes the full suite of updates – DTM, land use, and defence improvements – with special focus on Rio de Janeiro, São Paulo, Porto Alegre, and Niterói.
JBA Vision
An easy-to-use web application to view our comprehensive global flood maps.
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Data
The largest and most comprehensive data suite available for understanding current and future flood risk anywhere in the world. -
Parametric
Globally consistent high-resolution flood data to profile risk, enable anticipatory action, and identify triggers and monitor thresholds for parametric insurance. -
Flood Risk Assessment
Tailored flood risk insight for a specified location at property or postcode level, utilising JBA’s market-leading, high resolution flood maps and analytics. -
Consultancy
Bespoke solutions and consultancy including tailored model builds, single site assessments, flood defence design and portfolio optimisation.
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