Brazil Accidental Death Trends: Rivers, Mud and Lightning

What the numbers show

Drowning is Brazil’s most common non-road accidental killer that is tracked year by year. The SOBRASA 2025 bulletin, built on Ministry of Health (DATASUS) mortality data, counts 5,883 drowning deaths in 2023, a rate of 2.8 per 100,000. That rate was 5.42 in 1979 and 3.45 in 2010. About 76% of deaths happen in rivers, lakes and reservoirs, about 13.6% on sea beaches and about 5% in pools. Men die about six times as often as women. Drowning is the second leading cause of death for children aged 1–4, and about four children drown every day. Lightning adds a smaller but steady toll: INPE’s ELAT group puts it at about 110 deaths and more than 200 injuries a year, with men making up 82% of victims in 2018–2022. Between 2000 and 2014, 1,789 people were killed by lightning. For falls, the Ministry of Health says they are the second leading cause of accidental death among older people, and the SUS records about 60,000 hospital admissions a year of people aged 60 and over after a fall.

Natural hazards cause the largest single death tolls. The January 2011 floods and landslides in Rio de Janeiro’s mountain region killed 918 people, officially, and left about 30,000 homeless. Petrópolis lost 241 people in February 2022. In February 2023, Bertioga on the São Paulo coast recorded 682 mm of rain, the largest total ever recorded in Brazil, and São Sebastião’s death toll passed 48 within days. The 2024 Rio Grande do Sul floods killed 180 people, with 32 still missing and 2.3 million affected across 478 municipalities. Two mining dam failures in Minas Gerais killed 19 people at Mariana in 2015 and 270 at Brumadinho in 2019. Relatives count 272 at Brumadinho, because two of the women killed were pregnant. Across 1995–2019, the Senate puts disaster deaths at 4,065, with losses of R$330 billion.

What is driving it

Most drownings happen in unguarded rivers and reservoirs, where there are no lifeguards. Lightning deaths follow outdoor work: 26% of incidents happen during rural activities and 21% inside homes, and Amazonas and Pará get the most strikes. Disaster deaths come from homes built on steep slopes and floodplains, hit by very heavy rain. In Nova Friburgo alone, about 24,000 people still lived in high-risk areas five years after 2011. CEMADEN logged 1,493 disaster events in 2025, mostly floods, and seven heatwaves. It sent 2,505 alerts to 1,133 monitored municipalities.

The policy response has moved towards early warning. The National Civil Protection and Defence Policy was signed into law in April 2012. Law 14.750/2023 now requires municipalities to monitor risk areas in real time and issue early warnings. For dams, official inquiries blamed engineering failures, not natural causes. A prosecutors’ report traced Mariana to works on the Fundão dam. A university study linked Brumadinho to drilling that triggered liquefaction. The 2024 Mariana settlement totals R$170 billion, by Vale’s count, including R$100 billion in new money.

Recent cases

• 14 October 2026: Heavy rain flooded central São Paulo, with at least 17 flooding points and three building collapses. One resident died in a collapse in Brasilândia, in the north zone (Agência Brasil).
• 25 February 2026: Rains in Minas Gerais’s Zona da Mata killed 46 people, 40 in Juiz de Fora and 6 in Ubá, with at least 21 missing. The federal government recognised a state of public calamity in Juiz de Fora (Agência Brasil).
• February 2026: CEMADEN’s report on 2025 recorded 1,493 disaster events, 336,656 people directly affected and about R$2.9 billion in material damage. It also counted seven heatwaves (CEMADEN).

Press releases and official reports, 2023–2026

Up to five key releases a year for the last four years, newest first. Most come from federal ministries and agencies such as the Ministry of Health, INPE, the Federal Highway Police, CENIPA and the Central Bank, from Agência Brasil, the public news agency, and from the Senate and Chamber news services and state governments; a few news reports are included where they are the clearest public record of an event. Headlines are our English translations of the Portuguese originals. Releases from 2007–2022 are in the expandable list after 2023.

2026

• 14 Oct 2026Agência BrasilRain floods downtown streets and leaves one dead in São Paulo's north zone
• 24 Jun 2026INTO (Ministry of Health)World Falls Prevention Day
• 25 Feb 2026Agência BrasilDeath toll from rains in Minas Gerais's Zona da Mata reaches 46
• Feb 2026CEMADENState of the climate, climate extremes and disasters in Brazil in 2025
• 5 Feb 2026SOBRASADrowning – epidemiological bulletin for Brazil, 2026 (2024 data)

2025

• 3 Nov 2025Agência Brasil'Caminhos da Reportagem' returns to Mariana ten years after the disaster
• 7 Feb 2025Agência BrasilBrumadinho disaster victim identified after six years
• 31 Jan 2025SOBRASADrowning – epidemiological bulletin for Brazil, 2025 (2023 data)

2024

• 14 Nov 2024Agência BrasilMAB and federal prosecutors to appeal acquittal of defendants in the Samarco case
• 26 Oct 2024Agência BrasilSamarco case: agreement winds up the Renova Foundation and sets new governance
• 3 Jul 2024Agência BrasilFlood deaths in Rio Grande do Sul rise to 180; 32 still missing
• 17 May 2024Senate News AgencyEmergency decrees for climate disasters reveal a 'map of tragedies'
• 12 May 2024Agência BrasilAmazonas and Pará are the states with the most lightning in the country

2023

• 19 Dec 2023Senate RadioNew Civil Defence policy comes into force
• 2 Aug 2023SOBRASADrowning – epidemiological bulletin for Brazil, 2023 (2021 data)
• 29 Jul 2023Agência BrasilDrowning causes 5,700 deaths a year in Brazil
• 23 Feb 2023Agência BrasilDeath toll on São Paulo's north coast rises to 49
• 20 Feb 2023Agência BrasilSão Paulo coast had the highest rainfall ever recorded in Brazil

Photo list

How this page is built. Figures come from the official statistical releases linked above; where agencies publish provisional numbers we say so, because they are revised. Brazil’s national death data come from the Ministry of Health mortality system (SIM/DATASUS) and are usually final about two years later, and some topics, such as fires, have no single national count, so we say which year and source each figure covers. Money is given in reais (R$). Headlines and quotes are our translations from Portuguese. Photos are public-domain or Creative Commons images credited in each caption; file photos are illustrative and are not from the events described unless the caption says so. This page tracks trends and is not personal safety, medical, legal or financial advice.