Levee Overtopping Risk Assessment under Climate Change Scenario in Kao-Ping River, Taiwan

Hsiao-Ping Wei, Yuan-Fong Su, Chao-Tzuen Cheng and Keh-Chia Yeh
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Hsiao-Ping Wei: National Science and Technology Center for Disaster Reduction, New Taipei City 23143, Taiwan
Yuan-Fong Su: National Science and Technology Center for Disaster Reduction, New Taipei City 23143, Taiwan
Chao-Tzuen Cheng: National Science and Technology Center for Disaster Reduction, New Taipei City 23143, Taiwan
Keh-Chia Yeh: Department of Civil Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan

Sustainability, 2020, vol. 12, issue 11, 1-12

Abstract: With the growing concern about the failure risk of river embankments in a rapidly changing climate, this study aims to quantify the overtopping probability of river embankment in Kao-Ping River basin in southern Taiwan. A water level simulation model is calibrated and validated with historical typhoon events and the calibrated model is further used to assess overtopping risk in the future under a climate change scenario. A dynamic downscaled projection dataset, provided by Meteorological Research Institute (MRI) has been further downscaled to 5-km grids and bias-corrected with a quantile mapping method, is used to simulate the water level of Kao-Ping River in the future. Our results highlighted that the overtopping risk of Kao-Ping River increased by a factor of 5.7~8.0 by the end of the 21st century.

Keywords: climate change; overtopping risk; levee (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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