Integrated application of the analytic hierarchy process and the geographic information system for flood risk assessment and flood plain management in Taiwan

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Title Integrated application of the analytic hierarchy process and the geographic information system for flood risk assessment and flood plain management in Taiwan
Author Chen, Yi-Ru; Yeh, Chao-Hsien; Yu, Bofu
Journal Name Natural Hazards
Year Published 2011
Place of publication Netherlands
Publisher Springer
Abstract Flooding is one of the major natural hazards in Taiwan, and most of the lowlying areas in Taiwan are flood-prone areas. In order to minimize loss of life and economic losses, a detailed and comprehensive decision-making tool is necessary for both flood control planning and emergency service operations. The objectives of this research were (i) to develop a hierarchical structure through the analytic hierarchy process (AHP) to provide preferred options for flood risk analysis, (ii) to map the relative flood risk using the geographic information system (GIS), and (iii) to integrate these two methodologies and apply them to one urban and one semi-rural area in central Taiwan. Fushin Township and the floodplain of Fazih River (1 km on either side of the channel) in Taichung City were selected for this study. In this paper, the flood risk is defined as the relative flood risk due to broken dikes or the failure of stormwater drainage systems. Seven factors were considered in relation to the failure of stormwater drainage, and five to that of broken dikes. Following well-defined procedures, flood maps were drawn based on the data collected from expert responses to a questionnaire, the field survey, satellite images, and documents from flood management agencies. The relative values of flood risk are presented using a 200-m grid for the two study areas. It is concluded that integration of AHP and GIS in flood risk assessment can provide useful detailed information for flood risk management, and the method can be easily applied to most areas in Taiwan where required data sets are readily available.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1007/s11069-011-9831-7
Copyright Statement Copyright 2011 Springer Netherlands. This is an electronic version of an article published in Natural Hazards, Vol. 59(3), pp. 1261-1276, 2011. Natural Hazards is available online at: http://www.springerlink.com/ with the open URL of your article.
Volume 59
Issue Number 3
Page from 1261
Page to 1276
ISSN 0921-030X
Date Accessioned 2012-03-07
Date Available 2013-05-30T03:41:29Z
Language en_US
Research Centre Atmospheric Environment Research Centre
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Physical Geography and Environmental Geoscience
URI http://hdl.handle.net/10072/43956
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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