A Review of Flood Risk Assessment

A Review of Flood Risk Assessment



Karamat Ali, Roshan M. Bajracharya, Hriday Lal. Koirala



Floods are one of the most common hazards in the world
and cause loss of lives, livelihood and property destruction. The
objective of this study was to review and synthesize concepts and
techniques of flood hazard, vulnerability and risk assessment with
reference to the Himalayan region. Flood risk is a function and a
product of hazard and vulnerability. The impact of flood and flash flood
(slow onset and rapid onset) events at a particular sitecan reflect key
socioeconomic factors and environmental services, like number of people
at risk, affect on ecological services and capability of human
population for recovery. Risk assessment is important in making
decisions, policies and managing floods. Using PRISMA methodology of
literature review, 120 articles were retrieved using PubMed and Google
Scholar database. 90 articles were included in the initial review. 30
articles were excluded from the review after reading the whole content
because they did not match the objectives of the literature review and
the inclusion criteria. Flood hazard assessment techniques are based on
various parameters such as meteorological, hydrological and
socioeconomic. There are four important steps in flood risk assessment
such as characterizing the area, determining hazard level and intensity,
assessing vulnerability and risk. Recently, advancement in GIS, remote
sensing and hydraulic modeling technology has been extensively used in
formulating models used for flood hazard calculation and risk analysis.
The occurrence of floods in mountainous regions are now more common
related to past and in the future, itseems more frequent due to global
warming. Community based flood warning systems can go a long way in
helping rural communities, as well as flood management agencies, to
prepare for flash floods. The enhancement of community resilience
through socioeconomic empowerment and strengthened adaptive capacity can
play a vital role in flood disaster management. 



10.22161/ijeab/1.4.62



http://ijeab.com/upload_document/issue_files/62%20IJEAB-DEC-2016-12-A%20Review%20of%20Flood%20Risk%20Assessment.pdf



http://ijeab.com/submit-paper/

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