Articles | Volume 30, issue 3
https://doi.org/10.5194/hess-30-573-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-573-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
03 Feb 2026
Research article |
| 03 Feb 2026
| 03 Feb 2026
Mechanisms and scenarios of the unprecedent flooding event in South Brazil 2024
Leonardo Laipelt
CORRESPONDING AUTHOR
Institute of Hydraulic Research (IPH), Federal University of Rio Grande do Sul, Porto Alegre, Brazil
Fernando Mainardi Fan
Institute of Hydraulic Research (IPH), Federal University of Rio Grande do Sul, Porto Alegre, Brazil
Rodrigo Cauduro Dias de Paiva
Institute of Hydraulic Research (IPH), Federal University of Rio Grande do Sul, Porto Alegre, Brazil
Matheus Sampaio Medeiros
Institute of Hydraulic Research (IPH), Federal University of Rio Grande do Sul, Porto Alegre, Brazil
Walter Collischonn
Institute of Hydraulic Research (IPH), Federal University of Rio Grande do Sul, Porto Alegre, Brazil
Anderson Ruhoff
Institute of Hydraulic Research (IPH), Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Short summary
This study presents the first detailed hydrodynamic assessment of the May 2024 floods in southern Brazil. The model accurately reproduced flood levels and extent, validated with in situ and satellite observations. Results indicate limited effectiveness of proposed hydraulic interventions, highlighting constraints of structural solutions. The findings improve understanding of complex river–estuary–lagoon dynamics and support better planning for future extreme floods under climate change.
This study presents the first detailed hydrodynamic assessment of the May 2024 floods in...
