Floods have become less deadly: an analysis of global flood fatalities 1975–2022

Floods have become less deadly: an analysis of global flood fatalities 1975–2022

27 February 2024 | S. N. Jonkman, A. Curran, L. M. Bouwer
Floods have become less deadly globally, according to a study analyzing flood fatalities from 1975 to 2022. The study uses data from the EM-DAT disaster database to examine trends in flood fatalities, mortality fractions, and the impact of various flood types. It finds that while the total number of flood fatalities has increased, the average number of fatalities per event has decreased over time. Mortality fractions per event have decreased in middle- and high-middle-income countries but increased in low-income countries. This highlights the importance of continued risk reduction and adaptation efforts. The study also compares flood fatalities with other natural disasters and finds that floods are the most frequent natural disasters up to 1000 fatalities. Flash floods lead to the highest mortality fractions per event. The study concludes that improved flood risk management practices over the last decades have contributed to the downward trend in fatalities per event. However, the total number of annual flood fatalities has remained relatively constant, partly due to increased exposure in flood-prone areas. The study emphasizes the need for continued efforts to reduce flood risk and improve disaster preparedness.Floods have become less deadly globally, according to a study analyzing flood fatalities from 1975 to 2022. The study uses data from the EM-DAT disaster database to examine trends in flood fatalities, mortality fractions, and the impact of various flood types. It finds that while the total number of flood fatalities has increased, the average number of fatalities per event has decreased over time. Mortality fractions per event have decreased in middle- and high-middle-income countries but increased in low-income countries. This highlights the importance of continued risk reduction and adaptation efforts. The study also compares flood fatalities with other natural disasters and finds that floods are the most frequent natural disasters up to 1000 fatalities. Flash floods lead to the highest mortality fractions per event. The study concludes that improved flood risk management practices over the last decades have contributed to the downward trend in fatalities per event. However, the total number of annual flood fatalities has remained relatively constant, partly due to increased exposure in flood-prone areas. The study emphasizes the need for continued efforts to reduce flood risk and improve disaster preparedness.
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[slides and audio] Floods have become less deadly%3A an analysis of global flood fatalities 1975%E2%80%932022