Flood event validation

Insights in critical time after flood event

When flood events occur, having an objective and data-driven validation process is critical for understanding what truly happened—and for improving both model reliability and portfolio response.

7Analytics delivers high-resolution event validation using our 1×1 m terrain-based flood model. Our validation workflow reconstructs past flood events by combining local rainfall observations, radar and satellite data, ground conditions, and infrastructure changes with our machine-learning calibrated model.

• User benefits: allows insurers, reinsurers, and asset managers to directly compare observed flood extents, claims, and modelled depths on a building-by-building basis.
• The result: quantitative evidence of model performance, transparent audit trails for regulatory submissions, and sharper insights into how well internal or third-party models captured the event footprint.

7Analytics validation outputs can also be used to assess exposure concentration, verify underwriting assumptions, and support parametric trigger reviews after major rainfall events.

We routinely validate events across Europe, the UK, the US, and Australia—covering both pluvial and fluvial flooding. Our data pipeline is updated quarterly, ensuring that topography, drainage, and land-use dynamics are fully represented.

For clients, this means a faster path to trust in modelled results, defensible insights for risk committees and regulators, and a concrete foundation for pricing, accumulation, and resilience decisions.