Climate risk and flood data modeling

Managing climate risk is an urgent and complex challenge for businesses.

There’s a growing demand for tools to model the impact of climate on your portfolios, engage with emerging regulatory requirements and build a more sustainable future. 

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Regulatory use case - diagram representing Fathom's climate dynamics framework
Jakarta flood map simulation
Satellite image of hurricane Helene
Aerial view floodplain - Pexels Mark A Jenkins

The impacts of changing weather patterns and population changes are immense, for businesses and communities everywhere.

Climate risk can affect a business’s financial performance, damaging assets and disrupting operations. The risk is material and multi-faceted, touching on environmental, regulatory, transitional, business, reputational and litigation risk.

And this risk is not something to worry about further in the future; it is with us right now. Global temperatures have already risen by around 1 °C since the beginning of the industrial era, and risk assessment tools that do not account for this are already out-of-date. Before we can fully understand the risk of the future, we need to fully understand the risk of today.

Flood risk is intrinsically linked with climate risk, which is why integrating flood data into risk management frameworks is crucial. Fathom’s flood maps and catastrophe models incorporate advanced climate-conditioned data, allowing businesses and organizations to understand and quantify their flood risk today and under any future climate scenario.

Risk Scores

Fathom's Risk Scores

Simple yet powerful metric that allows you to compare asset-level to portfolio-level views of risk for any climate scenario and any point on the planet.

Explore Risk Scores >

Global Flood Map

Fathom's Global Flood Map

Fully flexible climate-conditioned flood hazard data for any projected combination of future year and climate scenario up to 2100.

Explore Global Flood Map >

Global Flood Cat

Fathom's Global Flood Cat model

Provides a climate-driven perspective on both present and future risk. It allows you to quantify financial risk across all major flood perils and understand drivers of risk accumulations, all customized to your own view.

Explore Global Flood Cat >

Fathom’s approach to climate risk

Fathom are experts in climate-impacted flood risk. We bring together market-leading global hazard, terrain and climate data within a flexible framework to unlock meaningful climate risk insights.

Fathom’s flood maps and catastrophe models incorporate Climate Dynamics, which allow users to customize their view of risk today and under different time horizons, climate scenarios and warming levels.

This helps insurers, financial companies, government bodies, engineering firms and anyone involved in flood risk management to:

Make climate-informed decisions around mitigation, resilience planning and adaptation

Assess risk to infrastructure and supply chains under different climate conditions

Meet regulatory requirements around climate risk reporting and disclosure

Assess and quantify risk to assets and investments

Flood risk and climate change

Flood risk is a direct consequence of, and a significant contributor to, the wider spectrum of climate-related risks. It is also the most costly natural disaster:

  • US$1.2 trillion in global economic losses from flood in the past 30 years
  • 30% increase in insured losses from flood events in the past decade

As well as the physical risk to property, development, assets and infrastructure, flooding also amplifies systemic financial instability, leading to business disruption and causing investments to become increasingly vulnerable.

That’s why it is more important than ever to incorporate flood risk data into risk management frameworks to support decisions and avoid potential losses.

Learn more about flood risk as a measure of asset value in our special report and watch our panel webinar.

Climate risk modeling

Climate risk modeling is crucial to understanding how vulnerable your assets, operations and supply chains are to the risks posed by climate change.

Using data, hazard maps, statistical methods and computational tools, climate risk assessments support more informed decision-making, long-term planning and regulatory compliance. Risk managers need to ensure that:

  • Models are built on solid scientific foundations, rigorously validated and underpinned by peer-reviewed research
  • The underlying models and assumptions are transparent and credible\
  • Assessments are able to stand up to scrutiny – whether from regulators, investors or board members
  • Models consider both present and future risk, under multiple climate scenarios and for all perils
  • Data is consistent on a global scale, particularly if your assets, operations and supply chains are spread globally, including in data-scarce and remote parts of the world

Fathom’s global flood maps and models are underpinned by extensively validated terrain and hazard data and our methodologies are peer-reviewed and publicly available.

Find out where our climate model data sit within Fathom’s methods and components by exploring our interactive Product Stack. 

Who we work with

World-leading businesses across capital markets, banking, insurance, engineering and the public sector use our flood data to add clarity to their business and operational-risk management, investment/divestment, capital-allocation decisions and resilience strategies.

Insurance

As climate change drives more frequent and severe flooding, re/insurers face mounting pressure to quantify future flood risk. Fathom’s climate-conditioned flood data help carriers and brokers assess exposure and aggregation across portfolios—now and decades into the future. This enables more accurate pricing, underwriting and regulatory reporting in an evolving climate risk landscape.

Engineering

For engineers, understanding how climate-driven flood risk will evolve is critical to building resilient infrastructure. Fathom’s data empower AEC firms, GIS analysts and asset owners with early access to credible, globally consistent flood and climate projections. This supports better design decisions, risk governance and compliance throughout the infrastructure lifecycle.

Financial markets

The value of assets and investments is increasingly shaped by future flood risk. Fathom enables banks, asset managers, and investors to incorporate climate-driven flood scenarios into due diligence, portfolio risk assessments, and regulatory disclosures. Our data fills critical gaps in ESG frameworks, helping financial institutions make more informed, forward-looking decisions.

International development

Governments and NGOs need actionable insights to adapt to future climate impacts, especially in flood-prone, resource-limited regions. Fathom’s globally available flood data support risk-informed planning, resilience building and disaster preparedness. By identifying future vulnerabilities, we help prioritize interventions and strengthen climate adaptation strategies worldwide.

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Chris Ewing Aon Impact Forecasting Head of Client Management

Quote Aon and Impact Forecasting can now more holistically approach clients’ flood risk management and quantification needs thanks to our collaboration with Fathom.

Remi Meynadier AXA Climate Analytics and Research Leader

Quote Everything we were looking for in a development partner was in Fathom. To fulfil our ambition of developing the best model that is transparent and uses the best data, we need to be very close to the academic world. Fathom has been created by the University of Bristol and is very transparent.

Read Case Study
Bank of England logo
Giorgis Hadzilacos Bank of England Senior Technical Specialist – Catastrophe & Climate Risk

Quote We would like to express our gratitude to both the physical risk open data providers as well as to the plethora of technical experts for all of their contributions to this exercise over the past two years.

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Dickie Whitaker Oasis Loss Modelling Framework Chief Executive

Quote There has been a practical realisation that one firm can’t do everything. The strength of all the other vendors is clearly one that can’t be ignored.

Matthias Kemter MSCI Senior Associate, MSCI Research

Quote A major factor for us was transparency and Fathom is very open about its research and methodologies, with everything published in peer-reviewed journals. This gives us and our clients confidence in the results.

Fathom’s Climate Dynamics framework

Climate Dynamics is Fathom’s solution for modeling how flood risk changes over time and under various climate scenarios.

Incorporated into our flood models and maps, the framework integrates climate model outputs with our existing flood hazard models through the use of change factors.

The result is climate-adjusted, multi-peril flood models that deliver a physically consistent, global view of how climate change might affect floods around the globe. They represent all plausible scenarios, from the optimistic to the most catastrophic, all the way up to 2100.

Shape your view of flood risk under any future scenario

Effectively respond to global regulations and represent plausible future flood scenarios with Fathom’s Climate Dynamics framework.

Fathom’s Climate Dynamics framework is a flexible tool allowing users to interrogate assumptions and develop a customized view of risk. It provides a globally consistent projection of how climate and flooding may evolve, with flexibility to adapt to diverse business needs.

Customize your own view of flood risk using Climate Dynamics

Integrated across Fathom’s product portfolio of scores, maps and models, choose from Fathom’s predefined climate options or select from:

Future year and global warming level:

Choose any year up to 2100.
Select warming levels from 1°C to 5°C above pre-industrial temperatures.

Future year and emissions scenario:

Tailor scenarios using IPCC pathways (SSPs, RCPs) or NGFS frameworks.

Median (50th percentile):

Median (50th percentile): Central estimate of flood risk.
Likely range (17th-83rd percentiles): IPCC-defined range for possible outcomes.

Get in touch

Fathom is a global leader in climate-impacted flood risk data. Get in touch to explore your use case with our expert team.