Water-related risk management is a multidisciplinary issue for railway systems. Risk diagnoses are crucial steps in risk management from infrastructure design to railway operation, monitoring and maintenance. Risk diagnoses are performed by crossing hazard exposure and vulnerability assessment, considering train traffic safety and regularity. Diagnoses aim at identifying sections at risk, prioritizing actions and recommending specific works. Intense surface runoff can cause major damage when impacting vulnerable railway sections, such as infrastructure flooding, ballast transport, embankment slope failure, erosion, or hydraulic structures clogging. For risk diagnoses, surface runoff hazard assessment suffers from a lack of dedicated method.
