Using Multi-criteria Analysis For Undertaking
Vulnerability Assessments Of
Flood Susceptible Communities
Author(s)
J. Perdikaris
Abstract
This paper presents a methodology for assessing the vulnerability of communities,
specifically as it relates to flooding using multi-criteria analysis and a risk
management approach. Risk is assessed as a combination of threat (expressed as
the probability that a given flood will occur); vulnerability (expressed as the
probability that a given vulnerability will succeed, given that the flood will
occur), and consequence (expressed as some measure of loss, such as dollar cost,
resources loss, programmatic impact, etc.). Many factors contribute to a
communities’ vulnerability with respect to flooding. These include its population,
built environment, and wealth, which are increasingly concentrated in a small
number of highly vulnerable areas that are susceptible to flooding.
The total risk is assessed as a combination of the risks associated with a
specific flooding scenario and its impact on a susceptible community. Risk is
reduced by countermeasures. However, the cost of countermeasures (relative to
the potential risks) is applied when arriving at an all encompassing risk
management strategy.
The ongoing phenomenon of climate change is altering our capacity to
effectively manage the risks associated with flooding. Moreover, it is affecting
North America in particularly distinct ways. In the past 10 years, Canada in
particular has faced the greatest increases in average annual temperatures of any
country, and a commensurate rise in severe weather-related natural disasters has
been observed across North America. Associated with these shifts has been an
increased occurrence of flooding, further exacerbating the situation and making
communities more vulnerable to its effects.
Keywords: flooding, risk management, vulnerability and coping capacity.
Keywords
flooding, risk management, vulnerability and coping capacity
Related Book
Other papers in this volume
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