University of Twente Student Theses

Flood vulnerability assessment on a commune level in Vietnam.Bachelor thesis about the application of a flood vulnerability assessment to communes of the Ca river basin in Nghe An province in Vietnam

Veenstra, Jelmer (2013) Flood vulnerability assessment on a commune level in Vietnam.Bachelor thesis about the application of a flood vulnerability assessment to communes of the Ca river basin in Nghe An province in Vietnam.

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Abstract:	To make it possible for governments and people in communes to respond to floods, there is a need to know to which extent a commune is vulnerable to floods. Flood vulnerability consists of the three factors exposure, susceptibility and resilience. These factors consist of indicators which assess different characteristics of vulnerability. Flood vulnerability can be displayed with a vulnerability score for its separate factors or as a combined flood vulnerability index (FVI) to display the overall flood vulnerability of an area or commune. For this research a set of 22 indicators is developed. The goal of the indicators is to require only data that is feasible to collect in the field with a questionnaire. All the relevant characteristics are assessed, but as a part of indicators that are feasible to assess. Also, the indicators discriminate to a reasonable degree between different levels of vulnerability. To collect the data for twenty of these indicators, a questionnaire is developed in this research, with a question for every indicator. There were questionnaires held in Vietnam about flood vulnerability before, but there were several problems while doing this. By developing a new method of asking questions and providing answers to the people, this questionnaire tries to improve the results. Still, there are some disadvantages, vulnerability of people remains difficult to assess. The questionnaire data of these twenty indicators is collected in the Nghe An province during the research. This data is available in excel and can be combined with the flood danger and land use data. Unfortunately, there is no weighing data collected, and there were some difficulties with collecting the data in the field. The data for the two other indicators, flood danger and land use, is already available, but it was not yet ready to put it in an FVI equation. The land use had to be divided into groups with the same vulnerability score. The flood modelling data consisted of depth, velocity and duration data, which had to be combined into a flood danger map with different vulnerability scores. The questionnaire, land use and flood danger data can be combined into maps of the factors of vulnerability. By giving a vulnerability score to every commune, it is clear which communes are more vulnerable than others. The factors can also be combined into the FVI and visualized with a map or a graph.
Item Type:	Essay (Bachelor)
Faculty:	ET: Engineering Technology
Subject:	56 civil engineering
Programme:	Civil Engineering BSc (56952)
Link to this item:	https://purl.utwente.nl/essays/64034
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