Articles | Volume 20, issue 4
Nat. Hazards Earth Syst. Sci., 20, 981–997, 2020
https://doi.org/10.5194/nhess-20-981-2020
Nat. Hazards Earth Syst. Sci., 20, 981–997, 2020
https://doi.org/10.5194/nhess-20-981-2020

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

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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.
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