The exceptional hydrological disaster of April-May 2024 in southern Brazil
ABSTRACT We present an overview of the unprecedent hydrological event that occurred in Rio Grande do Sul state in late April and early May 2024, causing floods and landslides in a scale that was not seen before in Brazil. The rainfall that caused the disaster is incomparable to any recent event in B...
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Associação Brasileira de Recursos Hídricos
2025-03-01
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| Series: | Revista Brasileira de Recursos Hídricos |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312025000100700&tlng=en |
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| author | Walter Collischonn Fernando Mainardi Fan Iporã Possantti Fernando Dornelles Rodrigo Paiva Matheus Sampaio Medeiros Gean Paulo Michel Fernando Jorge Corrêa Magalhães Filho Sofia Royer Moraes Francisco Fernando Noronha Marcuzzo Rossano Dalla Lana Michel Tamara Leitzke Caldeira Beskow Samuel Beskow Elisa Helena Leão Fernandes Leonardo Laipelt dos Santos Anderson Ruhoff Masato Kobiyama Gilberto Loguercio Collares Franco Buffon Emanuel Duarte Stefany Lima Fernando Setembrino Cruz Meirelles Daniel Gustavo Allasia Piccilli |
| author_facet | Walter Collischonn Fernando Mainardi Fan Iporã Possantti Fernando Dornelles Rodrigo Paiva Matheus Sampaio Medeiros Gean Paulo Michel Fernando Jorge Corrêa Magalhães Filho Sofia Royer Moraes Francisco Fernando Noronha Marcuzzo Rossano Dalla Lana Michel Tamara Leitzke Caldeira Beskow Samuel Beskow Elisa Helena Leão Fernandes Leonardo Laipelt dos Santos Anderson Ruhoff Masato Kobiyama Gilberto Loguercio Collares Franco Buffon Emanuel Duarte Stefany Lima Fernando Setembrino Cruz Meirelles Daniel Gustavo Allasia Piccilli |
| author_sort | Walter Collischonn |
| collection | DOAJ |
| description | ABSTRACT We present an overview of the unprecedent hydrological event that occurred in Rio Grande do Sul state in late April and early May 2024, causing floods and landslides in a scale that was not seen before in Brazil. The rainfall that caused the disaster is incomparable to any recent event in Brazil at large spatial and temporal scale. The intense and long-lasting precipitation led to record floods from small rivers with drainage areas below 1000 km2 to the Patos Lagoon, which drains more than 180,000 km2. The rainfall also led to landslides that rank first in Brazil in terms of spatial scale and number of occurrences. Mountain rivers experienced flash floods with extreme water levels, while in the lowlands the large rivers and the Patos Lagoon experienced long duration flooding, with stage remaining high for about 30 days. The flood event is probably ranked first in terms of displaced people and damage to property and infrastructure in Brazil. Almost 200 fatalities occurred due to the disaster and protection structure failures. The April-May hydrological event show a glimpse of what can be expected along the coming decades due to climate change in a region that covers South Brazil, and parts of the neighboring countries. |
| format | Article |
| id | doaj-art-47573524df9944739d2cb75fada36acc |
| institution | DOAJ |
| issn | 2318-0331 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Associação Brasileira de Recursos Hídricos |
| record_format | Article |
| series | Revista Brasileira de Recursos Hídricos |
| spelling | doaj-art-47573524df9944739d2cb75fada36acc2025-08-20T02:53:34ZengAssociação Brasileira de Recursos HídricosRevista Brasileira de Recursos Hídricos2318-03312025-03-013010.1590/2318-0331.302520240119The exceptional hydrological disaster of April-May 2024 in southern BrazilWalter Collischonnhttps://orcid.org/0000-0002-7630-396XFernando Mainardi Fanhttps://orcid.org/0000-0003-0371-7851Iporã Possanttihttps://orcid.org/0000-0002-2194-4516Fernando Dornelleshttps://orcid.org/0000-0001-8639-8934Rodrigo Paivahttps://orcid.org/0000-0003-2918-6681Matheus Sampaio Medeiroshttps://orcid.org/0009-0000-9132-8666Gean Paulo Michelhttps://orcid.org/0000-0002-7857-1941Fernando Jorge Corrêa Magalhães Filhohttps://orcid.org/0000-0001-5447-0137Sofia Royer Moraeshttps://orcid.org/0000-0001-7045-7661Francisco Fernando Noronha Marcuzzohttps://orcid.org/0000-0002-0737-668XRossano Dalla Lana Michelhttps://orcid.org/0000-0001-7767-6189Tamara Leitzke Caldeira Beskowhttps://orcid.org/0000-0003-4471-9386Samuel Beskowhttps://orcid.org/0000-0003-3900-0895Elisa Helena Leão Fernandeshttps://orcid.org/0000-0003-1869-0233Leonardo Laipelt dos Santoshttps://orcid.org/0000-0002-5735-4809Anderson Ruhoffhttps://orcid.org/0000-0002-3585-2022Masato Kobiyamahttps://orcid.org/0000-0003-0615-9867Gilberto Loguercio Collareshttps://orcid.org/0000-0003-4910-5420Franco Buffonhttps://orcid.org/0000-0001-7353-7368Emanuel Duartehttps://orcid.org/0000-0002-8856-8375Stefany Limahttps://orcid.org/0000-0002-3796-9005Fernando Setembrino Cruz Meirelleshttps://orcid.org/0000-0002-1483-8838Daniel Gustavo Allasia Piccillihttps://orcid.org/0000-0003-4519-8404ABSTRACT We present an overview of the unprecedent hydrological event that occurred in Rio Grande do Sul state in late April and early May 2024, causing floods and landslides in a scale that was not seen before in Brazil. The rainfall that caused the disaster is incomparable to any recent event in Brazil at large spatial and temporal scale. The intense and long-lasting precipitation led to record floods from small rivers with drainage areas below 1000 km2 to the Patos Lagoon, which drains more than 180,000 km2. The rainfall also led to landslides that rank first in Brazil in terms of spatial scale and number of occurrences. Mountain rivers experienced flash floods with extreme water levels, while in the lowlands the large rivers and the Patos Lagoon experienced long duration flooding, with stage remaining high for about 30 days. The flood event is probably ranked first in terms of displaced people and damage to property and infrastructure in Brazil. Almost 200 fatalities occurred due to the disaster and protection structure failures. The April-May hydrological event show a glimpse of what can be expected along the coming decades due to climate change in a region that covers South Brazil, and parts of the neighboring countries.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312025000100700&tlng=enNatural disasterExtreme hydrological eventsExceptional floods |
| spellingShingle | Walter Collischonn Fernando Mainardi Fan Iporã Possantti Fernando Dornelles Rodrigo Paiva Matheus Sampaio Medeiros Gean Paulo Michel Fernando Jorge Corrêa Magalhães Filho Sofia Royer Moraes Francisco Fernando Noronha Marcuzzo Rossano Dalla Lana Michel Tamara Leitzke Caldeira Beskow Samuel Beskow Elisa Helena Leão Fernandes Leonardo Laipelt dos Santos Anderson Ruhoff Masato Kobiyama Gilberto Loguercio Collares Franco Buffon Emanuel Duarte Stefany Lima Fernando Setembrino Cruz Meirelles Daniel Gustavo Allasia Piccilli The exceptional hydrological disaster of April-May 2024 in southern Brazil Revista Brasileira de Recursos Hídricos Natural disaster Extreme hydrological events Exceptional floods |
| title | The exceptional hydrological disaster of April-May 2024 in southern Brazil |
| title_full | The exceptional hydrological disaster of April-May 2024 in southern Brazil |
| title_fullStr | The exceptional hydrological disaster of April-May 2024 in southern Brazil |
| title_full_unstemmed | The exceptional hydrological disaster of April-May 2024 in southern Brazil |
| title_short | The exceptional hydrological disaster of April-May 2024 in southern Brazil |
| title_sort | exceptional hydrological disaster of april may 2024 in southern brazil |
| topic | Natural disaster Extreme hydrological events Exceptional floods |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312025000100700&tlng=en |
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