New Machine Learning Ensemble for Flood Susceptibility Estimation

Floods are among the most severe natural hazard phenomena that affect people around the world. Due to this fact, the identification of zones highly susceptible to floods became a very important activity in the researcher’s work. In this context, the present research work aimed to propose the followi...

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Bibliographic Details
Published in:Water resources management 2022-09, Vol.36 (12), p.4765-4783
Main Authors: Costache, Romulus, Arabameri, Alireza, Costache, Iulia, Crăciun, Anca, Pham, Binh Thai
Format: Article
Language:English
Subjects:
Atmospheric Sciences
Civil Engineering
Earth and Environmental Science
Earth Sciences
Environment
Flood predictions
Floods
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Hydrology
Hydrology/Water Resources
Machine learning
River basins
Rivers
Susceptibility
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Summary:Floods are among the most severe natural hazard phenomena that affect people around the world. Due to this fact, the identification of zones highly susceptible to floods became a very important activity in the researcher’s work. In this context, the present research work aimed to propose the following 3 novel ensembles to estimate the flood susceptibility in Putna river basin from Romania: UltraBoost-Weights of Evidence (U-WOE), Stochastic Gradient Descending-Weights of Evidence (SGD-WOE) and Cost Sensitive Forest-Weights of Evidence (CSForest-WOE). In this regard, a sample of 132 flood locations and 14 flood predictors was used as input datasets in the 3 aforementioned models. The modeling procedure performed through a ten-fold cross-validation method revealed that the SGD-WOE ensemble model achieved the highest performance in terms of ROC Curve-AUC (0.953) and also in terms of Accuracy (0.94). The slope and distance from river flood predictors achieved the highest importance in terms of flood susceptibility genesis, while the aspect, TPI, hydrological soil groups, and plan curvature have the lowest influence in terms of flood occurrence. The area with high and very high susceptibility represents between 21% and 24% of the Putna river basin from Romania.
ISSN:0920-4741
1573-1650
DOI:10.1007/s11269-022-03276-0