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Water 2016, 8(11), 521; doi:10.3390/w8110521

Development of a New Generation of Flood Inundation Maps—A Case Study of the Coastal City of Tainan, Taiwan

1
Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan 70101, Taiwan
2
UNESCO-IHE, Westvest 7, 2611 AX Delft, The Netherlands
3
Disaster Prevention Research Center, National Cheng Kung University, Tainan 70101, Taiwan
*
Authors to whom correspondence should be addressed.
Academic Editor: Zoran Vojinovic
Received: 22 September 2016 / Revised: 28 October 2016 / Accepted: 31 October 2016 / Published: 8 November 2016
(This article belongs to the Special Issue Hydroinformatics and Urban Water Systems)
View Full-Text   |   Download PDF [16272 KB, uploaded 8 November 2016]   |  

Abstract

Flood risk management has become a growing priority for city managers and disaster risk prevention agencies worldwide. Correspondingly, large investments are made towards data collection, archiving and analysis and technologies such as geographic information systems (GIS) and remote sensing play important role in this regard. GIS technologies offer valuable means for delineation of flood plains, zoning of areas that need protection from floods and identification of plans for development and scoping of various kinds of flood protection measures. Flood inundation maps (FIMs) are particularly useful in planning flood disaster risk responses. The purpose of the present paper is to describe efforts in developing new generation of FIMs at the city scale and to demonstrate effectiveness of such maps in the case of the coastal city of Tainan, Taiwan. In the present work, besides pluvial floods, the storm surge influence is also considered. The 1D/2D coupled model SOBEK was used for flood simulations. Different indicators such as Probability of Detection (POD) and Scale of Accuracy (SA) were applied in the calibration and validation stages of the work and their corresponding values were found to be up to 88.1% and 68.0%, respectively. From the overall analysis, it came up that land elevation, tidal phase, and storm surge are the three dominant factors that influence flooding in Tainan. A large number of model simulations were carried out in order to produce FIMs which were then effectively applied in the stakeholder engagement process. View Full-Text
Keywords: flood inundation map (FIM); 1D/2D SOBEK model; storm surge; stakeholder engagement flood inundation map (FIM); 1D/2D SOBEK model; storm surge; stakeholder engagement
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Doong, D.-J.; Lo, W.; Vojinovic, Z.; Lee, W.-L.; Lee, S.-P. Development of a New Generation of Flood Inundation Maps—A Case Study of the Coastal City of Tainan, Taiwan. Water 2016, 8, 521.

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