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

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 typho...

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Bibliographic Details
Published in:Sustainability 2020-06, Vol.12 (11), p.4511
Main Authors: Wei, Hsiao-Ping, Su, Yuan-Fong, Cheng, Chao-Tzuen, Yeh, Keh-Chia
Format: Article
Language:English
Subjects:
Climate change
Computer simulation
Embankments
Environmental assessment
Environmental risk
Floods
Levees
Magnetic resonance imaging
Mapping
Meteorological research
Risk assessment
River basins
Rivers
Studies
Sustainability
Typhoons
Water levels
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Summary: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.
ISSN:2071-1050
2071-1050
DOI:10.3390/su12114511