Hi Gareth, FEMA shared a session focused on flood modeling: https://training.fema.gov/EMIWeb/edu/docs/hrm/Session%206%20-%20Modeling%20Flood%20Hazards.pdf It does a good job of parsing out the components of a model. As others have already said, it is specialized and often proprietary (e.g. for Insurers). Some scientists at Esri such as Dean Djokic might be a good connection for you. Send me a personal message if you need an introduction. - lauri
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