| Deaths | Event | Location | Year |
|---|
| 1,000,000–2,000,000 | 1887 Yellow River flood | China | 1887 |
| 422,000–2,000,000 | 1931 China floods | China | 1931 |
| 470,000–500,000 | 1938 Yellow River flood | China | 1938 |
| 300,000–500,000 | 1970 Bhola cyclone | East Pakistan (present-dayBangladesh) | 1970 |
| 145,000 | 1935 Yangtze flood | China | 1935 |
| 100,000+ | St. Felix's flood | Netherlands | 1530 |
| up to 100,000[1][2][3] | The flood of 1099 | Netherlands,England | 1099 |
| 50,000–80,000[2] | St. Lucia's flood, storm surge | Holy Roman Empire | 1287 |
| 0 or 36,000 or 60,000[4] | North sea flood,storm surge | Holy Roman Empire | 1212 |
| 40,000[5] | 1949 Eastern Guatemalan floods | Guatemala | 1949 |
| 25,000+ | First St. Marcellus's flood, storm surge | Holy Roman Empire | 1219 |
| 33,000 | 1954 Yangtze floods | China | 1954 |
| 27,000–1,500,000 | 1974 Bangladesh flood due to monsoon rain | Bangladesh | 1974 |
| 26,000–240,000 | 1975 Banqiao Dam failure and floods | China | 1975 |
| 25,000–40,000 | St. Marcellus's flood (Grote Mandrenke), storm tide | Holy Roman Empire,Denmark | 1362 |
| 20,000–25,000 | All Saints' Flood, storm surge | Holy Roman Empire | 1570 |
| 20,000 | 1939 Tianjin flood[citation needed] | China | 1939 |
| 15,000[6] | 1705 Po Valley flood | Po Valley, Italy | 1705 |
| 14,000 | Christmas flood, storm surge | Netherlands,Germany,Denmark | 1717 |
| 11,498+ | Storm Daniel | Libya,Greece,Turkey,Bulgaria,Egypt | 2023 |
| 10,000–100,000[1][2][3] | St. Elizabeth's flood, storm surge | Holy Roman Empire | 1421 |
| 10,000–30,000 | 1999 Vargas mudslide | Venezuela | 1999 |
| 9,887–30,000 | 1999 Odisha cyclone, storm surge | India (Odisha),Myanmar,Bangladesh | 1999 |
| 8,000–15,000 | Burchardi flood | Germany,Denmark | 1634 |
| 7,000[6] | 1557Palermo flood | Sicily | 1557 |
| 6,511 | 2020 South Asian floods | Afghanistan,India,Bangladesh,Nepal,Pakistan,Sri Lanka | 2020 |
| 6,200[citation needed] | Sichuan,Hubei,Anhui flood | China | 1980 |
| 6,054 | 2013 North India floods | India | 2013 |
| 6,000-12,000 | 1900 Galveston hurricane | United States | 1900 |
| 5,154 (official)[citation needed] | 1963 Great Hai River flood | Hai River, China | 1963 |
| 5,000–10,000[citation needed] | Rajasthan flood | India | 1943 |
| 5,000[citation needed] | Lake Palcacocha in the Cojup valley,Cordillera Blanca mountain range, landslide by massive avalanche | Peru | 1941 |
| 4,892[5] | 1968Rajasthan,Gujarat monsoon rain | India | 1968 |
| 4,800[citation needed] | 1951Manchuria flood | China | 1951 |
| 4,000[6] | 1610Tanaro River flood | Italy | 1610 |
| 3,838[citation needed] | 1998Eastern India,1998 Bangladesh flood | India,Bangladesh | 1998 |
| 3,814[citation needed] | 1989Sichuan flood | China | 1989 |
| 3,800[citation needed] | 1978Northern India monsoon rain | India | 1978 |
| 3,656[citation needed] | 1998Yangtze river flood | China | 1998 |
| 3,500[citation needed] | 1948Fuzhou flood | China | 1948 |
| 3,189+ | 2010 China floods, landslides | China,North Korea | 2010 |
| 3,083[7] | 1993 South Asian monsoon floods | Nepal,India,Bangladesh,Pakistan | 1993 |
| 3,076[citation needed] | 2004Eastern India,Bangladesh monsoon rain | India,Bangladesh | 2004 |
| 3,000[6] | 1530Tiber River flood | Italy | 1530 |
| 3,000[6] | 1598Tiber River flood | Italy | 1598 |
| 3,000[citation needed] | 1992Afghanistan flood, mainly,Gulbahar,Kalotak,Shutul,Parwan, flash flood, mudslide | Afghanistan | 1992 |
| 2,910[citation needed] | 1950Pakistan flood | Pakistan | 1950 |
| 2,828+ | 2011 Southeast Asian floods | Philippines,Thailand,Cambodia,Myanmar,Vietnam,Laos,Malaysia | 2011 |
| 2,775[citation needed] | 1996 China flood, torrential floods, mud-rock flows | China | 1996 |
| 2,566 | 1953 Japan floods (1953 Northern Kyushu flood and1953 Wakayama flood), massive rain, flood, mudslides | mainlyKitakyushu,Kumamoto,Wakayama, andKizugawa, Japan | 1953 |
| 2,400[citation needed] | North Sea flood, storm surge | Netherlands | 838 |
| 2,379[citation needed] | 1988Bangladesh monsoon rain | Bangladesh | 1988 |
| 2,209 | Johnstown Flood | United States (Pennsylvania) | 1889 |
| 2,142 | North Sea flood of 1953 storm surge | Netherlands,United Kingdom,Belgium | 1953 |
| 2,075[citation needed] | 1981Sichuan,Shanxi flood | China | 1981 |
| 2,055[citation needed] | 1987Bangladesh monsoon rain | Bangladesh | 1987 |
| several thousands[citation needed] | North Sea flood, storm surge | Holy Roman Empire | 1014 |
| several thousands[citation needed] | St. Juliana flood, storm surge | Holy Roman Empire | 1164 |
| several thousands[citation needed] | St. Agatha flood, storm surge | Holy Roman Empire | 1288 |
| several thousands[citation needed] | St. Clemens flood, storm surge | Holy Roman Empire | 1334 |
| several thousands | St. Mary Magdalene's flood | Central Europe | 1342 |
| several thousands[citation needed] | All Saints flood, storm surge | Holy Roman Empire | 1532 |
| several thousands[citation needed] | North Sea flood, storm surge | Netherlands | 1703 |
| 2,000–10,000 | Great Iran Flood | Iran | 1954 |
| 2,000–5,0001 | 1979 Machchhu dam failure | India (Morvi,Gujarat) | 1979 |
| 2,000–3,000[citation needed] | Mostaganem andOran flood | Algeria | 1927 |
| 2,000+ | Bristol Channel floods | England andWales; possibletsunami | 1607 |
| 2,000+ | May 2004 Caribbean floods | Haiti,Dominican Republic,Puerto Rico,Jamaica,Cuba,Bahamas,Turks and Caicos Islands | 2004 |
| 1,985 | Pakistan floods, monsoon flooding[8][9][10][11] | Pakistan | 2010 |
| 1,921[5][6] | Vajont Dam landslide and flood | Italy | 1963 |
| 1,834[citation needed] | 1992Pakistan,Northern India monsoon rain | Pakistan,India | 1992 |
| 1,739[12] | 2022 Pakistan floods | Pakistan | 2022 |
| 1,723[citation needed] | 1991China flood, mainly,Sichuan,Guizhou,Hubei, torrential floods, mud-rock flows | China | 1991 |
| 1,700[citation needed] | 1955 Northern India flood | India | 1955 |
| 1,624[citation needed] | Fujian,Anhui,Zhejiang flood | China | 2005 |
| 1,605–3,363[citation needed] | spring flooding | Haiti,Dominican Republic | 2004 |
| 1,558 | St. Martin flood, storm surge | Netherlands | 1686 |
| 1,532[citation needed] | 2002 China flood, torrential floods, mud-rock flows | China | 2002 |
| 1,503[citation needed] | Mumbai and the surrounding stateMaharashtra,Karnataka, monsoon rain in2005 | India | 2005 |
| 1,437[citation needed] | 1995 China flood, mainly,Hunan,Jiangxi,Liaoning,Sichuan,Fujian, torrential rain, devastating floods, mud-rock flows | China | 1995 |
| 1,392[13] | Hurricane Katrina, storm surge andlevee failure | United States | 2005 |
| 1,348 | 2007 China flood, mountain torrents, mud-rock flows | China | 2007 |
| 1,268 | Floods caused byTropical Storm Washi[14] | Philippines | 2011 |
| 1,029 | 2004 China flood, mountain torrents, mud-rock flows, landslide | China | 2004 |
| 1,000–8,000 | 2016 Indian floods by monsoon rain | India | 2016 |
| 1,000[citation needed] | 1961Bihar flood | India | 1961 |
| 992 | 1957 Isahaya flood, massive rain and mudslide | Japan | 1957 |
| 941 | InuyamaIruka pond dam failure | Japan | 1868 |
| 933 | 1938 Hanshin flood, mainlyTokyo,Kobe, massive rain and landslide | Japan | 1938 |
| 915 | Barcelona,flash flood | Spain | 1962 |
| 903 | January 2011 Rio de Janeiro floods and mudslides | Brazil | 2011 |
| 848 | 1977Karachi flood | Pakistan | 1977 |
| 844 | 2006 North Korean floods | North Korea | 2006 |
| 827 | Algiers,Bab El Oued, devastating flood, mudslide | Algeria | 2001 |
| 800 | North Sea flood, storm surge | Netherlands | 1825 |
| 800 | 2000Mozambique flood | Mozambique | 2000 |
| 705 | 2006Ethiopia flood, mainlyOmo River Delta,Dire Dawa,Tena, andGode, flash floods, heavy rain | Ethiopia | 2006 |
| 677 | August 8 2009 flood due toTyphoon Morakot; an entire village of Shiaolin was buried in the southern county ofKaohsiung | Taiwan | 2009 |
| 672 | 1972 Seoul flood | South Korea | 1972 |
| 653 | 1972 Luzon flood | Philippines | 1972 |
| 650 | Great Flood of 1913 | United States | 1913 |
| 610 | 2007 North Korean floods | North Korea | 2007 |
| 595 | 1999 Vietnamese floods | Vietnam | 1999 |
| 594 | Hanoi andRed River Delta flood | North Vietnam | 1971 |
| 540 | 1969 Tunisia flooding | Tunisia | 1969 |
| 532 | Cuzco,Huallaga, torrential rain, flooding, landslide | Peru | 1982 |
| 517 | 1967 Massive rain of Japan, mainly, Kobe,Kure,Agano River, massive rain and landslide | Japan | 1967 |
| 506 | KwaZulu-Natal | South Africa | 1987 |
| 500 | Malawi, flash flood and landslide | Malawi | 1991 |
| 500[15] | 2018 East Africa floods | Kenya,Ethiopia,Uganda,Rwanda, andSomalia | 2018 |
| 483 | 2018 Kerala floods | India | 2018 |
| 464 | Lisbon flash flood | Portugal | 1967 |
| 449+ | 2016 China floods | China | 2016 |
| 445 | Western Japan, massive rains and landslides | Japan | 1972 |
| 437 | 1967Brazil flood, mainlyRio de Janeiro,São Paulo, flood and landslide | Brazil | 1967 |
| 431 | St. Francis Dam failure | United States (California) | 1928 |
| 431 | 2015 Tamil Nadu floodsChennai,Cuddalore andAndhra Pradesh named2015 South Indian floods | India | 2015 |
| 429 | 2002 Nepal flood, mainly occurred atMakwanpur, monsoon rain, flood, landslide | Nepal | 2002 |
| 425 | October 1999 Mexico floods, mainly occurred atTabasco,Puebla,Chiapas, flood and mudslide as a result fromTropical Depression Eleven | Mexico | 1999 |
| 421 | Malpasset Dam failure | France | 1959 |
| 420 | St. Aaron's Flood | Amsterdam | 1420 |
| 415+ | 2024 Nigeria floods | Nigeria | 2024 |
| 408 | 1969 South Korea flood, mainly,Gyeongsangbuk-do,Gyeongsangnam-do,Gangwon-do, torrential rain, landslide | South Korea | 1969 |
| 407 | 1993Iran flood, mainly occurred atIsfahan,Bandar Abbas, flash flood and landslide | Iran | 1993 |
| 405 | 1998 South Korea flood, heavy massive rain, landslide | South Korea | 1998 |
| 400 | 1955LebanonTripoli flood | Lebanon | 1955 |
| 386 | Thailand,Malaysia, mainlyNakhon,Songkhla, andKelantan, torrential rain | Thailand,Malaysia | 1988 |
| 385+ | Wayanad, Kerala, India | Chooral Mala Landslide | 2024 |
| 385 | Ohio River flood of 1937 | United States (Pennsylvania,Ohio,West Virginia,Kentucky,Indiana,Illinois) | 1937 |
| 373 | 1966Rio de Janeiro flood, flood and landslide | Brazil | 1966 |
| 364 | Piura,Tumbes, torrential rain, flooding, landslide | Peru | 1983 |
| 360+ | Great Dayton Flood | United States | 1913 |
| 360 | 1958Buenos Aires flood | Argentina | 1958 |
| 356+[6][16] | 1923Gleno Dam failure | Italy | 1923 |
| 353 | 2007 African Nations flood | mainlySudan,Nigeria,Burkina Faso,Ghana,Kenya, and other African countries | 2007 |
| 347 | 1996 Yemen flood | Yemen | 1996 |
| 345 | 1987 South Korea flood, mainly,Chungchongnam-do,Jeollanam-do,Kangwon, torrential rain, landslide | South Korea | 1987 |
| 342 | 2006 East African Flood | Kenya,Ethiopia,Somalia | 2006 |
| 315 | North Sea flood of 1962 storm tide | Germany | 1962 |
| 313 | 2003Sumatra flood, mainlyJambi,Batanghari,Tondano, torrential rain, flash flood, landslide | Indonesia | 2003 |
| 302 | 2021 Henan floods | China | 2021 |
| 300+ | 2024 Nepal floods | Nepal | 2024 |
| 300[6] | 1584Tanaro River flood | Italy | 1584 |
| 300 | 1878 flood in Miskolc | Miskolc, Hungary | 1878 |
| 299 | 1982 Nagasaki flood | Japan | 1982 |
| 290 | Rio de Janeiro andFluminense flood | Brazil | 1988 |
| 272 | 1973Granada,Almeria,Murcia flood | Spain | 1973 |
| 270 | Great Sheffield flood dam disaster | United Kingdom | 1864 |
| 268 | Val di Stava dam disaster | Italy | 1985 |
| 259 | 1966Maian flood | Jordan | 1966 |
| 255 | 1998Tajikistan flood | Tajikistan | 1998 |
| 251 | 2021 Maharashtra floods | India | 2021 |
| 250 | La Josefina landslide dam failure | Ecuador | 1993 |
| 246+ | April 2010 Rio de Janeiro floods and mudslides | Rio de Janeiro, Brazil | 2010 |
| 246 | Great Mississippi Flood of 1927 | United States (Arkansas,Illinois,Kentucky,Louisiana,Mississippi,Missouri,Tennessee,Texas,Oklahoma,Kansas) | 1927 |
| 243 | 2021 European floods | Austria,Belgium,Germany,Italy,Luxembourg,Netherlands,Switzerland,United Kingdom,Romania,Czech Republic,Croatia | 2021 |
| 240 | 2017 Gujarat flood | Gujarat andRajasthan, India | 2017 |
| 238 | Black Hills flood | United States | 1972 |
| 237 | 2024 Spanish floods | Province of Valencia,Spain | 2024 |
| 235–244 | 2009 Philippine Floods[17] | Philippines | 2009 |
| 233 | 2020 Central Vietnam floods | Vietnam,Cambodia,Laos | 2020 |
| 230 | Marrakesh flash flood | Morocco | 1995 |
| 228 | 2007Balochistan flood byCyclone Yemyin | Pakistan | 2007 |
| 223 | 2012 North Korean floods | North Korea | 2012 |
| 225 | 2018 Japan floods | Japan | 2018 |
| 203+ | 2017 China floods | China | 2017 |
| 200–600 | 1824 St. Petersburg flood | Russia | 1824 |
| 200–600 | Chungar landslide, flood, avalanche | Peru | 1971 |
| 200+ | 2008 South China floods | South China | 2008 |
| 200 | Pamir Mountain area, mud and rock slides, torrential rain | Tajikistan | 1992 |
| 199 | Santa Catarina,Tubarão, torrential heavy rain | Brazil | 1974 |
| 199 | 2009 El Salvador floods and mudslides | El Salvador | 2009 |
| 190 | Huigra, landslide | Ecuador | 1931 |
| 187 | Ulaanbaatar-Tov area, heavy rain, mostly during August | Mongolia | 1982 |
| 182 | 2024 Rio Grande do Sul floods | Brazil | 2024 |
| 172 | 2012 Russian floods | Krymsk | 2012 |
| 165 | 2004Brazil flood, mainlySão Paulo,Pemambuco, torrential rain, mudslide | Brazil | 2004 |
| 159 | Sarno flood and landslide | Italy | 1998 |
| 154 | KwaZulu-Natal | South Africa | 1995 |
| 141+ | 2010–2011 Southern Africa floods | Africa | 2011 |
| 140+ | 2019 Pakistan floods and storms | Pakistan | 2019 |
| 139 | Mill River (Northampton, Massachusetts) | United States | 1874 |
| 138 | 2010 Colombia floods | Colombia | 2010 |
| 136+ | July 2025 Central Texas floods | United States | 2025 |
| 128 | Izumo, massive rain and mudslide | Japan | 1964 |
| 125+ | 2010 Leh floods | Jammu and Kashmir,Pakistan/India | 2010 |
| 123 | 2009Jeddah torrential rain, floods | Saudi Arabia | 2009 |
| 121 | 1986 Northern Vietnam floods | Vietnam | 1986 |
| 120 | 1991Antofagasta flood, mudslide | Chile | 1991 |
| 119 | 2007 Central andEast Java torrential monsoon rain, landslide, flood | Indonesia | 2007 |
| 117 | Masuda, massive rain and landslide | Japan | 1983 |
| 115 | Los Angeles flood of 1938 | United States | 1938 |
| 114 | 1990 South Korea flood,Seoul,Inchon, heavy rain | South Korea | 1990 |
| 114 | 1997 Central European flood | Poland,Czech Republic | 1997 |
| 113 | 2019 Jayapura flood and landslide | Indonesia | 2019 |
| 113 | 2021 Afghanistan flood,2021 Nuristan floods | Afghanistan | 2021 |
| 110 | Southern Federal District, heavy rain, landslide[18] | Russia | 2002 |
| 104 | 1981Laingsburg flood | South Africa | 1981 |
| 101 | 2013 Argentina floods | Argentina | 2013 |
| 101 | 2016 Sri Lankan floods | Sri Lanka | 2016 |
| 100+ | 2023 North India floods | India | 2023 |
| 100 | 2008 Vietnam floods | Vietnam,China | 2008 |
| 94 | The Mameyes disaster | Ponce, Puerto Rico | 1985 |
| 86 | "Las Nieves" camping river flood, inBiescas. | Spain | 1996 |
| 85+ | January 2010 Rio de Janeiro floods and mudslides | Rio de Janeiro,Brazil | 2010 |
| 81+ | Valencia flood | Valencia, Spain | 1957 |
| 81 | Holmfirth floods—Bilberry Reservoir dam failure | United Kingdom | 1852 |
| 81 | 2021 Turkey floods | Turkey | 2021 |
| 80–100[19] | 1852 Gundagai flood | Australia | 1852 |
| 80+ | 2014 Southeast Europe floods | Serbia,Bosnia and Herzegovina,Croatia | 2014 |
| 80[20] | 1988 Sudan floods | Sudan | 1988 |
| 80 | 1977 Johnstown flood | Johnstown, Pennsylvania, US | 1977 |
| 78 | Austin Dam failure | United States | 1911 |
| 77+ | 2019 Iran floods | Iran | 2019 |
| 73 | 1993 Kagoshima flood, mudslides and debris flow | Japan | 1993 |
| 72+ | 2012 Nigeria floods | Nigeria | 2012 |
| 72 | Gudbrandsdalen flood and landslides | Norway | 1789 |
| 68 | 2019 South Sulawesi floods | Indonesia | 2019 |
| 67 | 2003 Santa Fe flood | Argentina | 2003 |
| 66 | 2020 Jakarta floods | Indonesia | 2020 |
| 62 | 2021 Niger floods | Niger | 2021 |
| 61[21] | Clermont and Peak Downs flood | Australia | 1916 |