Global leader in flood and climate risk

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New report

The playbook for flood underwriters in a changing climate

New product

Fathom launches FathomDEM+, new world-leading accurate terrain data

Insight

How is the financial sector rethinking physical climate risk?

Launch event

Quantifying future flood risk: Inside Global Flood Cat | Future

New tool

US Flood Risk Index: Reveal hidden flood risk. Prevent avoidable losses.

Research

FathomDEM: an improved global terrain map using a hybrid vision transformer model

New product

Introducing Global Flood Cat—The first truly global catastrophe model to cover all major flood perils.

Research

A 30 m global flood inundation model for any climate scenario

Product briefing

Metadata — Fathom’s first-of-its-kind assessment of flood risk data certainty

Updates

Swiss Re acquires Fathom, global leader in water risk intelligence

New product

New US Flood Map – The most complete and technologically advanced flood map for the United States

New Product

Fathom Risk Scores – Powerful flood risk metrics for any global location, under any climate scenario

Products

Climate change is
happening now

Fathom’s cutting-edge products support you to understand what impact climate change has on your flood risk both now and in the future. Our solutions are well established within the industry and set a new benchmark in global flood mapping.

Catastrophe modeling
Product
Flood hazard data & maps
Product
Global Terrain Data
Product
Sectors

Fathom has been providing high quality flood risk intelligence across a wide range of sectors since 2013

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Sector
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Research papers

Academic scrutiny of our products gives our clients the reassurance that they are consuming trusted and transparent data from the forefront of science

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New Research paper

Evaluating SWOT in the Coastal Zone

  • Rong, Y.,
  • Bates CBE FRS, P.,
  • Neal, J.,
  • Bell, P.,
  • Gommenginger, C.,
  • Lichtman, I.,
  • Banks, C.,
  • Calafat, F.,
  • Martin, A.,
  • Brown, J.,
  • Cooke, R.,
  • Balfour, C.,
  • Dominicis, M.,
  • Payo, M.,
  • Williams, S.,
  • Amoudry, L.,
  • Chuter, S.,
  • Neill, S.,
  • Chisholm, J.,
  • Kupiec, J.,
  • Lewis, M.,
  • Gleason, C.

01/24/2026
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Research paper

Automated tail-informed threshold selection for extreme coastal sea levels

A new method, TAILS, sharpens how we identify extreme events by focusing on the most critical data, giving clearer, more reliable estimates of future coastal hazards worldwide.

11/17/2025
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Research paper

Introducing BURGER, Fathom’s new extreme rainfall dataset

  • Hoch, J.,
  • Probyn, I.,
  • Marra, F.,
  • Lucas, C.,
  • Bates, J.,
  • Cooper, A.,
  • Fowler, H.,
  • Hatchard, S.,
  • Lewis, E.,
  • Savage, J.,
  • Addor, N.,
  • Sampson, C.

New research by Fathom’s Senior Hydrologist, Dr Jannis Hoch, and other Fathom scientists describes Fathom’s new dataset, Bottom Up Regionalised Global Extreme Rainfall, or BURGER for short. It’s the first of its kind to be created from rainfall gauge data and the first to contain extreme estimates for durations as short as an hour.

10/13/2025
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Research paper

Satellite Requirements to Capture Water Propagation in Earth’s Rivers

  • Cerbelaud, A.,
  • David, C.,
  • Pavelsky, T.,
  • Biancamaria, S.,
  • Garambois, P.,
  • Kittel, C.,
  • Papa, F.,
  • Bates, P.,
  • Tourian, M.,
  • Durand, M.,
  • Frasson, R.,
  • Oubanas, H.,
  • Simard, M.,
  • Schumann, G.,
  • Allen, G.,
  • Tarpanelli, A.,
  • Wongchuig, S.,
  • Wade, J.,
  • Tom, M.,
  • Malaterre, P.,
  • Crétaux, J.,
  • Gleason, C.,
  • Nielsen, K.,
  • Elmi, O.,
  • Schwatke, C.,
  • Scherer, D.,
  • Gal, L.,
  • Paris, A.,
  • Dasgupta, A.,
  • Munier, S.,
  • Feng, D.,
  • Bauer-Gottwein, P.,
  • Hossain, F.,
  • Yamazaki, D.,
  • Kitambo, B.,
  • Mischel, S.,
  • Bonnema, M.,
  • Verma, K.,
  • Andreadis, K.,
  • Picot, N.,
  • Benveniste, J.,
  • Dourand, M.

07/22/2025
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Research paper

Global River Topology (GRIT): A bifurcating river hydrography

  • Wortmann, M.,
  • Slater, L.,
  • Hawker, L.,
  • Liu, Y.,
  • Neal, J.,
  • Zhang, B.,
  • Schwenk, J.,
  • Allen, G.,
  • Ashworth, P.,
  • Boothroyd, R.,
  • Cloke,, H.,
  • Delorme, P.,
  • Gebrechorkos, S.,
  • Griffith, H.,
  • Leyland, J.,
  • McLelland, S.,
  • Nicholas, A.,
  • Sambrook-Smith, G.,
  • Vahidi, E.,
  • Parsons, D.,
  • Darby, S.

Researchers have created the first branching global river network that represents bifurcations, multi-threaded channels and canals.

05/15/2025
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Research paper

FathomDEM Global Terrain Map

A new research paper published in Environmental Research Letters outlines the creation of FathomDEM, a new global 30 m DEM produced using a novel machine-learning approach.

02/11/2025