1D/2D hydraulic modelling
Numerical modelling of water movement in channels, floodplains and drainage networks to estimate water levels, depths, velocities and extents. 1D models represent flow along channels; 2D models represent overland/floodplain flows on a grid or mesh.
Example Usage
"We used 1D/2D hydraulic modelling to translate forecast flows into site-specific depths and extents for operational thresholds."
Typical Units & Data
Model files; cross-sections/mesh; levels (mAOD); depth/velocity grids
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 & IntegrationFlood extent (inundation map)
Mapped boundary of flooded area for a scenario or event, from models or observations..
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..
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