Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
doi:10.5194/nhess-2016-141
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
27 Jun 2016
Review status
This discussion paper is under review for the journal Natural Hazards and Earth System Sciences (NHESS).
Data-driven Flood Analysis and Decision Support
Meng-Han Tsai1, Er-Xuan Sung2, and Shih-Chung Kang2 1Center for Weather Climate and Disaster Research, Taipei, 10617, Taiwan
2Department of Civil Engineering, National Taiwan University, Taipei, 10617, Taiwan
Abstract. Flood management is a critical issue when facing natural disasters. In current practice, the evaluation of potential threat areas is a multi-disciplinary task. It requires much communication and coordination between institutions such as the meteorological unit and hydrological unit, which makes the process time-consuming and less efficient. This study developed a system called FloodViz, which integrates all the associated tasks. FloodViz collects the rainfall forecasts from the meteorological agency, analyzes the datasets of rainfall forecasts using the rainfall threshold to evaluate the potential flood areas, and then organizes the results through data visualization to make them user-friendly for decision makers. To validate FloodViz, we tested this system during Typhoon Feng-wong. The results showed that FloodViz can reduce the time spent during the flood management process by 17 minutes. Based on the results, FloodViz can improve the operating efficiency of decision-making and help decision makers in their flood response.

Citation: Tsai, M.-H., Sung, E.-X., and Kang, S.-C.: Data-driven Flood Analysis and Decision Support, Nat. Hazards Earth Syst. Sci. Discuss., doi:10.5194/nhess-2016-141, in review, 2016.
Meng-Han Tsai et al.
Meng-Han Tsai et al.
Meng-Han Tsai et al.

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Short summary
Urban flash flooding tends to be more frequent than usual in Taiwan. This article hence purposed a flood early warning system to reduce the risk of flood. The three main components of the system are rainfall data acquisition, identifying the potential flood area, and visually display the flood hazard map. The goal is to improve the operating efficiency of decision-making process by reducing the time of flood hazard map production and improving practitioners' efficiency on understanding hazard.
Urban flash flooding tends to be more frequent than usual in Taiwan. This article hence purposed...
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