Articles | Volume 22, issue 4
Nat. Hazards Earth Syst. Sci., 22, 1419–1435, 2022
https://doi.org/10.5194/nhess-22-1419-2022
Nat. Hazards Earth Syst. Sci., 22, 1419–1435, 2022
https://doi.org/10.5194/nhess-22-1419-2022
Research article
21 Apr 2022
Research article | 21 Apr 2022

Real-time coastal flood hazard assessment using DEM-based hydrogeomorphic classifiers

Keighobad Jafarzadegan et al.

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Cited articles

Afshari, S., Tavakoly, A. A., Rajib, M. A., Zheng, X., Follum, M. L., Omranian, E., and Fekete, B. M.: Comparison of new generation low-complexity flood inundation mapping tools with a hydrodynamic model, J. Hydrol., 556, 539–556, https://doi.org/10.1016/j.jhydrol.2017.11.036, 2018. 
Alizad, K., Hagen, S. C., Medeiros, S. C., Bilskie, M. V., Morris, J. T., Balthis, L., and Buckel, C. A.: Dynamic responses and implications to coastal wetlands and the surrounding regions under sea level rise, PLOS ONE, 13, e0205176, https://doi.org/10.1371/journal.pone.0205176, 2018. 
Arcement, G. J. and Schneider, V. R.: Guide for selecting Manning's roughness coefficients for natural channels and flood plains, U.S. Geological Survey, https://ton.sdsu.edu/usgs_report_2339.pdf (last access: 23 September 2021), 1989. 
Barbier, E. B.: Chapter 27 – The Value of Coastal Wetland Ecosystem Services, in: Coastal Wetlands, edited by: Perillo, G. M. E., Wolanski, E., Cahoon, D. R., and Hopkinson, C. S., Elsevier, 947–964, https://doi.org/10.1016/B978-0-444-63893-9.00027-7, 2019. 
Bass, B. and Bedient, P.: Surrogate modeling of joint flood risk across coastal watersheds, J. Hydrol., 558, 159–173, https://doi.org/10.1016/j.jhydrol.2018.01.014, 2018. 
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The high population settled in coastal regions and the potential damage imposed by coastal floods highlight the need for improving coastal flood hazard assessment techniques. This study introduces a topography-based approach for rapid estimation of flood hazard areas in the Savannah River delta. Our validation results demonstrate that, besides the high efficiency of the proposed approach, the estimated areas accurately overlap with reference flood maps.
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