The uncertainty of flood frequency analyses in  hydrodynamic model simulations

Zhou, Xudong; Ma, Wenchao; Echizenya, Wataru; Yamazaki, Dai

doi:https://doi.org/10.5194/nhess-21-1071-2021

Articles | Volume 21, issue 3

https://doi.org/10.5194/nhess-21-1071-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-21-1071-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 3

Research article

|

23 Mar 2021

Research article |

| 23 Mar 2021

The uncertainty of flood frequency analyses in hydrodynamic model simulations

Xudong Zhou, Wenchao Ma, Wataru Echizenya, and Dai Yamazaki

Supplement

https://doi.org/10.5194/nhess-21-1071-2021-supplement

Data sets

Global-hydrodynamics/CaMa-Flood_v4: CaMa-Flood (Version v4.00) D. Yamazaki, M. Revel, X. Zhou, and T. Nitta https://doi.org/10.5281/zenodo.4609655

Python 3.x library to estimate linear moments for statistical distribution functions F. Hollebrandse, J. Adams, J., and N. Nutt https://github.com/OpenHydrology/lmoments3

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Short summary

This article assesses different uncertainties in the analysis of flood risk and found the runoff generated before the river routing is the primary uncertainty source. This calls for attention to be focused on selecting an appropriate runoff for the flood analysis. The uncertainties are reflected in the flood water depth, inundation area and the exposure of the population and economy to the floods.