Flood extent (inundation map)
Mapped boundary of flooded area for a scenario or event, from models or observations.
Example Usage
"We publish flood extent polygons as a GIS layer for client dashboards."
Typical Units & Data
Polygon (GeoJSON/Shapefile)
Related Keywords
Related Terms
Hydrological model
Simulates rainfall–runoff processes to produce flows at points of interest from rainfall and catchment data..
Modelling, Mapping & IntegrationHydraulic model
Simulates water movement in rivers/floodplains/drainage networks to estimate levels and inundation..
Modelling, Mapping & Integration1D/2D hydraulic modelling
Numerical modelling of water movement in channels, floodplains and drainage networks to estimate water levels, depths, velocities and extents.
Modelling, Mapping & IntegrationFlood depth
Depth of water above ground level; key for estimating damage and safe access decisions..
Modelling, Mapping & IntegrationFlood velocity
Speed/direction of floodwater; critical for hazard to people/vehicles and structural loading..
Modelling, Mapping & IntegrationDigital elevation model (DEM)
Gridded ground elevation dataset used for flood mapping/modelling; accuracy drives outputs..
FloodWatch Resources
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