Analysis of pluvial flood damage costs in residential buildings : A case study in Malmö

Summary, in English

Pluvial flood damage to residential buildings causes a significant part of direct tangible flood losses. In this study, we investigate the non-hazard variables and sewer system types in relation to damage costs in the city of Malmö, Sweden. A comprehensive data set of around 1000 records of direct damage to residential buildings from a cloudburst event on 31 August 2014 in Malmö, Sweden has been analysed at property scale with no lumping together of data. The results show that properties connected to combined sewer systems are much more exposed to pluvial flood damage than properties connected to separated sewer systems, with the ratio of the number of claims being close to three. The analysis of building-specific variables shows no clear statistical relationships to the damage costs. To further the understanding of damage costs caused by urban pluvial flooding, it is necessary to extend the group of explanatory variables to include information about the socio-economic background of households, the actual value of assets in basements and the precautionary measures taken by house owners.

• Author: Shifteh Mobini; Erik Nilsson; Andreas Persson; Per Becker; Rolf Larsson
• Department/s: Division of Water Resources Engineering; Dept of Physical Geography and Ecosystem Science; Centre for Geographical Information Systems (GIS Centre); Division of Risk Management and Societal Safety
• Publishing year: 2021-06-24
• Language: English
• Pages: 11-11
• Publication/Series: International Journal of Disaster Risk Reduction
• Volume: 62
• Links: http://dx.doi.org/10.1016/j.ijdrr.2021.102407
• Document type: Journal article
• Publisher: Elsevier
• Topic: Water Engineering
• Status: Published
• Project: Just or Unjust - Assessment of rainfall-related flood damage in a Swedish context
• ISBN/ISSN/Other: ISSN: 2212-4209