2023
DOI: 10.4215/rm2023.e22004
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Flood Risk Index Mapping of an Area Downstream of a Dam in Case of a Break

Francisco Moreira Alves Junior,
Masato Kobiyama,
Cláudia Weber Corseuil

Abstract: We aimed to evaluate the flood risk index due to the hypothetical break of the São Bento dam (SC, Brazil). The risk index was obtained by combining the hazard and vulnerability indices. The hazard index was obtained by multiplying the velocity by the depth of the water, simulated with HEC-RAS 2D. The simulated flood extent was 64.8 km², with a maximum flow of 3586.60 m³·s-1, a depth of up to 2.0 m, and a velocity of up to 2.0 m·s-1 in most of the area. The formation of the breach occurred in 2.85 h, and the pe… Show more

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