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porträtt av forskaren Nicklas Guldåker.foto

Nicklas Guldåker

Senior Lecturer

porträtt av forskaren Nicklas Guldåker.foto

A methodological approach for mapping and analysing cascading effects of flooding events

Author

  • Björn Arvidsson
  • Nicklas Guldåker
  • Jonas Johansson

Summary, in English

Current local or regional flood risk assessments, as required by the EU flood risk directive, rarely account for cascading effects due to interdependencies between critical infrastructures. However, it is essential to consider these effects, as they may severely impact areas outside the immediate flood risk area. The main purpose is to present and problematize a method (AB-CEM) for mapping and analysing cascading effects due to floods, aiming at also being relevant for other spatially widespread hazards. The method development and the pilot study, in Sweden, reveal that there is a prominent practical need for methods for mapping and analysing critical infrastructure interdependencies and cascading effects. Another key finding is that the method process and its results can serve as an important basis for decision-making about proactive and reactive efforts related to geographically extensive hazards. We further conclude that there is a recurring problem regarding sensitive and secret data. More specifically, the conflicting interests of information availability and information security concerning critical infrastructures, which needs to be resolved at the national level and communicated through clear guidelines. The method is a much-needed step towards accounting for cascading effects of floods in practice.

Department/s

  • Department of Human Geography
  • Division of Risk Management and Societal Safety

Publishing year

2023

Language

English

Pages

659-671

Publication/Series

International Journal of River Basin Management

Volume

21

Issue

4

Document type

Journal article

Publisher

International Association of Hydraulic Engineering Research

Topic

  • Other Civil Engineering
  • Infrastructure Engineering
  • Human Geography

Keywords

  • cascading effects
  • flood risk assessment
  • critical infrastructure
  • interdependencies
  • GIS
  • Sweden
  • flood directive

Status

Published

Project

  • CenCIP
  • Developed risk management and Critical Infrastructures

ISBN/ISSN/Other

  • ISSN: 1814-2060