Corporate Flood Risk Assessment

Identify and manage your properties’ flood exposure
across any region globally

The comprehensive nature of our data allows large-scale risk assessments to be undertaken by organisations with global scale infrastructure. In today’s global economy, it is not uncommon for supply chains to span multiple continents, including developing regions.

Fathom’s data allows our clients to mitigate against the potential impacts of flooding, by providing them with the confidence to identify, plan and manage their flood exposures on a global scale. Our strategic flood risk data are used across a wide range of business operations from mergers and acquisitions to infrastructure investment and planning.

Our technology

Fathom offers a variety of different models designed to support businesses to confidently assess flood exposure and inform business processes.

Fathom's Global Flood Map

Global Flood Map

Global flood mapping from the cutting edge of scientific research.

Catastrophe Modeling

Thousands of years of synthetic flood events at your fingertips.

Global Terrain Data – FABDEM+

The new standard for a globally consistent and accurate digital elevation model.

Fathom's Risk Scores

Risk Scores

Discover Fathom Risk Scores, powerful flood risk metrics for any global location, under any climate scenario.

Features of Fathom’s models


Terrain data

Global Terrain Data - FABDEM+

Fathom’s flood maps are underpinned by the best globally available terrain dataset for flood modelling – FABDEM+. The true global bare-earth terrain data combines FABDEM with high-quality laser altimeter (LiDAR) data gathered as recently as 2023.

Explore Fathom’s Global Terrain Data.

Fathom’s team has been at the forefront of building market leading Global Terrain Data since 2017, when we first published the methodology for MERIT DEM.




With sub-perils explicitly modelled to build a comprehensive understanding of the impact of different flood sub perils on different assets.


Climate data

Climate change illustration flood model

In a rapidly evolving climate landscape, relying solely on historical records can lead to substantial mis-estimates of hazard. Fathom’s products incorporate data from relevant climate models, meaning that Fathom’s technology accounts for the growing impact of a non-stationary climate.

Learn more about Fathom’s Climate Dynamics framework


Return periods

Return periods - Flood hazard data Fathom

All of Fathom’s products simulate flood events for 10 return periods ranging from the 1-in-5 to the 1-in-1000 year flood. This enables users to understand the implications of a wider range of flood events and allows for a better understanding of event frequencies.


Flood depths

Fathom flood depths

Flood depths and extents are critical to understanding the impact and severity of flooding for all three flood sub perils.


Risk Scores

Flood map showing Fathom's Risk Scores

Fathom’s flood data are now also available as Risk Scores. Offering a simple yet powerful way to compare the flood risk for assets across your portfolio. Available in two forms, Relative Risk and Risk Category, the metrics are designed to deliver a consistent method of understanding how flood risk varies from one location to another.

Discover Fathom Risk Scores

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Ted Baksa Microsoft Senior Software Engineer

Quote Fathom’s flood hazard and risk data products are critical to assessing risks to Microsoft’s cloud infrastructure. In this way, their data impacts the delivery of services relied on by the 400 million global users of Office 365, and OneDrive, and the 48 million members of Xbox.

Dr Matthew Free Arup Director of Natural Hazard and Risk Management

Quote Fathom’s most recent release – Fathom-Global 3.0 – provides flood maps for anywhere in the world, and at improved levels of detail, providing information to help decision makers better manage their future flood risk by considering climate change and the associated uncertainty.

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Vanessa Lopez CARTO Data Partnerships Manager

Quote “Fathom’s data are super granular, which is something that our customers value a lot. You need that granularity to really understand how a flood will impact an asset.”

Sompo international
Paul McEwan Sompo International Global Risk Analytics Director

Quote Fathom provide a first-rate product and service based upon cutting-edge research and methodologies, which are both robust and transparent. Their flood data sets are global, consistent and high calibre. Most importantly, Fathom is a responsive and collaborative firm who consistently deliver.

Get in touch to learn more about Fathom’s work with multi-national corporates.