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Sustainability 2018, 10(10), 3470; https://doi.org/10.3390/su10103470

Assessment of Critical Infrastructure Resilience to Flooding Using a Response Curve Approach

1
Deltares, Flood Risk Management Department, Boussinesqweg 1, 2629 HV Delft, The Netherlands
2
Ebbwater Consulting, 510-119 West Pender Street, Vancouver, BC B6B 1S5, Canada
3
UN-IHE Delft, Resilience Research Group, Westvest 7, 2611 AX Delft, The Netherlands
*
Author to whom correspondence should be addressed.
Received: 15 August 2018 / Revised: 21 September 2018 / Accepted: 26 September 2018 / Published: 28 September 2018
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Abstract

Following a flood the functioning of critical infrastructure (CI), such as power and transportation networks, plays an important role in recovery and the resilience of the city. Previous research investigated resilience indicators, however, there is no method in the literature to quantify the resilience of CI to flooding specifically or to quantify the effect of measures. This new method to quantify CI resilience to flooding proposes an expected annual disruption (EADIS) metric and curve of disruption versus likelihood. The units used for the EADIS metric for disruption are in terms of people affected over time (person × days). Using flood modelling outputs, spatial infrastructure, and population data as inputs, this metric is used to benchmark CI resilience to flooding and test the improvement with resilience enhancing measures. These measures are focused on the resilience aspects robustness, redundancy and flexibility. Relative improvements in resilience were quantified for a case study area in Toronto, Canada and it was found that redundancy, flexibility, and robustness measures resulted in 44, 30, and 48% reductions in EADIS respectively. While there are limitations, results suggest that this method can effectively quantify CI resilience to flooding and quantify relative improvements with resilience enhancing measures for cities. View Full-Text
Keywords: resilience; critical infrastructure; quantification; impact assessment; risk reduction; flood risk resilience; critical infrastructure; quantification; impact assessment; risk reduction; flood risk
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Murdock, H.J.; de Bruijn, K.M.; Gersonius, B. Assessment of Critical Infrastructure Resilience to Flooding Using a Response Curve Approach. Sustainability 2018, 10, 3470.

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