Geoscience Reference
In-Depth Information
Fig. 5.
The categorization of flood hazard based on velocity and water depth.
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Fig. 6. Flood hazard map: combination of water depth and flow velocity according to
Penning-Rowsell and Tunstall.
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in greater detail the propagation characteristics when the floodwater dis-
perses and flows over complex topography, like after overtopping or breaking
through the levees, or in an urban environment. An advantage of 2D model-
ing is that it gives information on the kinetic energy (impulse/momentum)
of the flood water and thus allows the assessment of flood propagation char-
acteristics (like warning time). This results in a more realistic simulation of
