Quantify and measure the economic impact of flooding for a variety of assets, across all 50 states, with Fathom-US CAT.

Fathom-US CAT features


Available through Oasis & Nasdaq—Access the model through a variety of providers including the Oasis Loss Modelling Framework and Nasdaq’s Risk Modelling for Catastrophes platform.


100% of river channels—All river channels, from large rivers to small streams, are explicitly represented.


Inland flooding—Total representation of pluvial and fluvial perils.


Vulnerability functions derived from National Flood Insurance Programme data—More representative flood losses are modelled using real, measured data from millions of insurance claims.


Defences – Flood defences included.


Hydrography data—Fathom-US CAT uses the latest map of US rivers from the US Geological Survey National Hydrography Dataset.

Fathom-US CAT enables

  • Consistent view of risk across the conterminous US.
  • Competitive pricing with US wide analysis.
  • Realistic loss simulation.
  • Evaluation of capital requirements for rare, high-impact loss years.
  • Understanding the impact of changes to reinsurance programmes.
  • Long-term loss estimates.
  • Portfolio management with concentration of risk and impact of diversification.
Paul McEwan Sompo International Global Risk Analytics Director

Quote Fathom provided 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.

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Marek Shafer Canopius Head of Catastrophe Management

Quote Fathom is an innovative and dynamic organisation at the forefront of flood risk research. They offer a range of specialist modelling tools and use a clear and impressive methodology.

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