Articles | Volume 20, issue 4
https://doi.org/10.5194/nhess-20-1025-2020
https://doi.org/10.5194/nhess-20-1025-2020
Research article
 | 
17 Apr 2020
Research article |  | 17 Apr 2020

Global-scale benefit–cost analysis of coastal flood adaptation to different flood risk drivers using structural measures

Timothy Tiggeloven, Hans de Moel, Hessel C. Winsemius, Dirk Eilander, Gilles Erkens, Eskedar Gebremedhin, Andres Diaz Loaiza, Samantha Kuzma, Tianyi Luo, Charles Iceland, Arno Bouwman, Jolien van Huijstee, Willem Ligtvoet, and Philip J. Ward

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Short summary
We present a framework to evaluate the benefits and costs of coastal adaptation through dikes to reduce future flood risk. If no adaptation takes place, we find that global coastal flood risk increases 150-fold by 2080, with sea-level rise contributing the most. Moreover, 15 countries account for 90 % of this increase; that adaptation shows high potential to cost-effectively reduce flood risk. The results will be integrated into the Aqueduct Global Flood Analyzer web tool.
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