Urban pluvial flood risk assessment – data resolution and spatial scale when developing screening approaches on the microscale

Löwe, Roland; Arnbjerg-Nielsen, Karsten

doi:https://doi.org/10.5194/nhess-20-981-2020

Articles | Volume 20, issue 4

https://doi.org/10.5194/nhess-20-981-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/nhess-20-981-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 4

Research article

|

14 Apr 2020

Research article |

| 14 Apr 2020

Urban pluvial flood risk assessment – data resolution and spatial scale when developing screening approaches on the microscale

Roland Löwe and Karsten Arnbjerg-Nielsen

Supplement

https://doi.org/10.5194/nhess-20-981-2020-supplement

Model code and software

Urban pluvial flood risk assessment - data resolution and spatial scale when developing screening approaches on the micro scale - Computer code R. Löwe https://doi.org/10.11583/DTU.8863766

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Short summary

To consider potential future urban developments in pluvial flood risk assessment, we develop empirical relationships for imperviousness and flood damage based on an analysis of existing urban characteristics. Results suggest that (1) data resolutions must be carefully selected, (2) there are lower limits for the spatial scale at which predictions can be generated, and (3) depth-dependent damage estimates are challenging to reproduce empirically and can be vulnerable to simulation artifacts.