| Death Toll | Event | Location | Date |
| 2,500,000–3,700,000[1] | 1931 China floods | China | 1931 |
| 900,000–2,000,000 | 1887 Yellow River (Huang He) flood | China | 1887 |
| 500,000–700,000 | 1938 Yellow River (Huang He) flood | China | 1938 |
| 231,000 | Banqiao Dam failure, result of Typhoon Nina. Approximately 86,000 people died from flooding and another 145,000 died during subsequent disease. | China | 1975 |
| 145,000 | 1935 Yangtze river flood | China | 1935 |
| more than 100,000 | St. Felix's Flood, storm surge | Netherlands | 1530 |
| 100,000 | Hanoi and Red River Delta flood | North Vietnam | 1971 |
| 100,000 | 1911 Yangtze river flood | China | 1911 |
| 50,000–80,000 | St. Lucia's flood, storm surge | Netherlands | 1287 |
| 60,000 | North Sea flood, storm surge | Netherlands | 1212 |
| 40,000 | 1949 Eastern Guatemala flood | Guatemala | 1949 |
| 36,000 | St. Marcellus flood, storm surge | Netherlands | 1219 |
| 30,000 | 1954 Yangtze river flood | China | 1954 |
| 28,700 | 1974 Bangladesh monsoon rain | Bangladesh | 1974 |
| 25,000–40,000 | St. Marcellus flood / Grote Mandrenke, storm tide | Netherlands, Germany, Denmark | 1362 |
| 20,006 | 1999 Vargas mudslide | Venezuela | 1999 |
| 20,000 | All Saints' Flood, storm surge | Netherlands | 1570 |
| 20,000 | 1939 Tianjin flood | China | 1939 |
| 14,000 | Christmas flood, storm surge | Netherlands, Germany, Denmark | 1717 |
| 10,000–100,000 | St. Elizabeth flood, storm surge | Netherlands, Belgium | 1421 |
| 8,000–15,000 | Burchardi flood | Germany, Denmark | 1634 |
| 10,000 | Great Iran Flood | Iran | 1954 |
| 10,000 | 1824 St. Petersburg flood | Russia | 1824 |
| several thousands | North Sea flood, storm surge | Netherlands | 1014 |
| several thousands | St. Juliana flood, storm surge | Netherlands | 1164 |
| several thousands | St. Agatha flood, storm surge | Netherlands | 1288 |
| several thousands | St. Clemens flood, storm surge | Netherlands | 1334 |
| several thousands | St. Mary Magdalene's flood | Central Europe | 1342 |
| several thousands | All Saints flood, storm surge | Netherlands | 1532 |
| several thousands | North Sea flood, storm surge | Netherlands | 1703 |
| 6,200 | Sichuan, Hubei, Anhui flood | China | 1980 |
| 5,000 | Cojup valley, Cordillera Blanca mountain range, landslide by massive avalanche | Peru | 1941 |
| 5,000–10,000 | Rajputana flood | India | 1943 |
| 4,892 | 1968 Rajasthan, Gujarat monsoon rain | India | 1968 |
| 4,800 | 1951 Manchuria flood | China | 1951 |
| 3,838 | 1998 Eastern India, Bangladesh monsoon rain | India, Bangladesh | 1998 |
| 3,814 | 1989 Sichuan flood | China | 1989 |
| 3,800 | 1978 Northern India monsoon rain | India | 1978 |
| 3,656 | 1998 Yangtze river flood | China | 1998 |
| 3,500 | 1948 Fuzhou flood | China | 1948 |
| 3,084 | 1993 South Asian monsoon rain | Nepal, India, Bangladesh, Pakistan | 1993 |
| 3,076 | 2004 Eastern India, Bangladesh monsoon rain | India, Bangladesh | 2004 |
| 3,000 | 1992 Afghanistan flood, mainly, Gulbahar, Kalotak, Shutul, Parwan, flash flood, mudslide | Afghanistan | 1992 |
| 2,910 | 1950 Pakistan flood | Pakistan | 1950 |
| 2,775 | 1996 China flood, torrential floods, mud-rock flows | China | 1996 |
| 2,566 | 1953 Japan flood, mainly Kitakyushu, Kumamoto, Wakayama, Kizugawa, massive rain, flood, mudslide | Japan | 1953 |
| 2,400 | North Sea flood, storm surge | Netherlands | 838 |
| 2,400 | 2008 Indian floods by monsoon rain | India | 2008 |
| 2,379 | 1988 Bangladesh monsoon rain | Bangladesh | 1988 |
| 2,200 | Johnstown Flood | United States (Pennsylvania) | 1889 |
| 2,142 | North Sea flood of 1953 storm surge | Netherlands, United Kingdom | 1953 |
| 2,075 | 1981 Sichuan, Shanxi Flood | China | 1981 |
| 2,055 | 1987 Bangladesh monsoon rain | Bangladesh | 1987 |
| 2,000–5,000 some reports list as many as 12,000 dead | Morvi dam burst | India (Morvi, Gujarat) | 1979 |
| 2,000–4,000 | Huascaran, Ranrahirca landslide by massive avalanche | Peru | 1962 |
| 2,000–3,000 | Mostaganem and Oran flood | Algeria | 1927 |
| 2,000+ | Bristol Channel floods, 1607 | England and Wales; possible tsunami | 1607 |
| 1,909 | Vajont Dam landslide and flood | Italy | 1963 |
| 1,834 | 1992 Pakistan, Northern India monsoon rain | Pakistan, India | 1992 |
| 1,723 | 1991 China flood, mainly, Sichuan, Guizhou, Hubei, torrential floods, mud-rock flows | China | 1991 |
| 1,700 | 1955 Northern India flood | India | 1955 |
| 1,624 | Fujian, Anhui, Zhejiang flood | China | 2005 |
| 1,605–3,363 | spring flooding | Haiti, Dominican Republic | 2004 |
| 1600-2,000 | Pakistan floods, monsoon flooding | Pakistan | 2010 |
| 1,558 | St. Martin flood, storm surge | Netherlands | 1686 |
| 1,532 | 2002 China flood, torrential floods, mud-rock flows | China | 2002 |
| 1,503 | Mumbai and the surrounding state Maharashtra, Karnataka, monsson rain | India | 2005 |
| 1,437 | 1995 China flood, mainly, Hunan, Jiangxi, Liaoning, Sichuan, Fujian, torrential rain, devastating floods, mud-rock flows | China | 1995 |
| 1,348 | 2007 China flood, mountain torrents, mud-rock flows | China | 2007 |
| 1,144 | 2006 Southern Leyte mudslide | Philippines | 2006 |
| 1,072+ | 2010 China floods, landslides | China, North Korea | 2010 |
| 1,029 | 2004 China flood, mountain torrents, mud-rock flows, landslide | China | 2004 |
| 1,000 | 1961 Bihar flood | India | 1961 |
| 992 | Isahaya, massive rain and mudslide | Japan | 1957 |
| 941 | Inuyama Iruka pond failure | Japan | 1868 |
| 933 | 1938 Massive rain of Japan, mainly Tokyo, Kobe, massive rain and landslide | Japan | 1938 |
| 915 | Barcelona, flash flood | Spain | 1962 |
| 894 | January 2011 Rio de Janeiro floods and mudslides | Brazil | 2011 |
| 848 | 1977 Karachi flood | Pakistan | 1977 |
| 844 | 2006 North Korea flooding | North Korea | 2006 |
| 827 | Algiers, Bab El Oued, devastating flood, mudslide | Algeria | 2001 |
| 800 | North Sea flood, storm surge | Netherlands | 1825 |
| 800 | 2000 Mozambique flood | Mozambique | 2000 |
| 705 | 2006 Ethiopia flood, mainly Omo River Delta, Dire Dawa, Tena, Gode, flash flood, heavyrain | Ethiopia | 2006 |
| 702 | 1999 Vietnam flood, mainly occurred at Thua Thien Hue | Vietnam | 1999 |
| 677 | 2009 August 8 flood, due to Typhoon Morakot, An entire village of Shiaolin was buried at the southern county of Kaohsiung | Taiwan | 2009 |
| 672 | 1972 Seoul, Kyonggi flood | South Korea | 1972 |
| 653 | 1972 Luzon flood | Philippines | 1972 |
| 640 | 1987 Villatina landslide disaster | Colombia | 1987 |
| 610 | 2007 North Korea flooding | North Korea | 2007 |
| 540 | 1969 Tunisia flooding | Tunisia | 1969 |
| 532 | Cuzco, Huallaga[disambiguation needed], 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 | Gauldal, landslide | Norway | 1345 |
| 464 | Lisbon flash flood | Portugal | 1967 |
| 445 | Western Japan, massive rains and landslides | Japan | 1972 |
| 437 | 1967 Brazil flood, mainly Rio de Janeiro, Sao Paulo, flood and landslide | Brazil | 1967 |
| 429 | 2002 Nepal flood, mainly occurred at Makwanpur, monssnal rain, flood, landslide | Nepal | 2002 |
| 425 | October 1999 Mexico floods, mainly occurred at Tabasco, Puebla, Chiapas, flood and mudslide as a result from Tropical Depression Eleven | Mexico | 1999 |
| 421 | Malpasset Dam failure | France | 1959 |
| 420 | St. Aarons Flood | Amsterdam | 1420 |
| 408 | 1969 South Korea flood, mainly, Gyeongsangbuk-do, Gyeongsangnam-do, Gangwon-do, torrential rain, landslide | South Korea | 1969 |
| 407 | 1993 Iran flood, mainly occurred at Isfahan, Bandar Abass, flash flood and landslide | Iran | 1993 |
| 405 | 1998 South Korea flood, heavy massive rain, landslide | South Korea | 1998 |
| 400 | 1955 Lebanon Tripoli flood | Lebanon | 1955 |
| 400 | St. Francis Dam failure | United States (California) | 1928 |
| 386 | Thailand, Malaysia, mainly, Nakhon, Songkhla, Kelantan, torrential rain | Thailand, Malaysia, | 1988 |
| 385 | Ohio River flood of 1937 | United States (Pennsylvania, Ohio, West Virginia, Kentucky, Indiana, Illinois) | 1937 |
| 373 | 1966 Rio 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 | 1958 Buenos Aires flood | Argentina | 1958 |
| 353 | 2007 African Nations flood | mainly Sudan, Nigeria, Burkina Faso, Ghana, Kenya, and many African country | 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 | 2003 Sumatra flood, mainly Jambi, Batanghari, Tondano, torrential rain, flash flood, landslide | Indonesia | 2003 |
| 300-400 | Flood in Miskolc, 1878 | Miskolc, Hungary | 1878 |
| 300 | Quebrada Blanca canyon, landslide | Colombia | 1974 |
| 300 | Pampayacta avalanche | Peru | 1963 |
| 299 | Nagasaki, massive rain and landslide | Japan | 1982 |
| 290 | Rio de Janeiro and Fluminense flood | Brazil | 1988 |
| 272 | 1973 Granada, Almeria, Murcia flood | Spain | 1973 |
| 270 | Great Sheffield flood dam disaster | United Kingdom | 1864 |
| 268 | Val di Stava dam disaster | Italy | 1985 |
| 261 | Gormec, avalanche | Turkey | 1992 |
| 259 | 1966 Maian flood | Jordan | 1966 |
| 255 | 1998 Tajikistan flood | Tajikistan | 1998 |
| 250 | Josefina 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 |
| 238 | Black Hills flood | United States | 1972 |
| 235-244 | 2009 Philippine Floods[6] | Philippines | 2009 |
| 230 | Marrakesh flash flood | Morocco | 1995 |
| 228 | 2007 Balochistan flood by Cyclone Yemyin | Pakistan | 2007 |
| 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 |
| 172+ | 2010 Salang avalanches | Salang tunnel, Afghanistan | 2010 |
| 172 | 1970 Recife and Pernambuco flood | Brazil | 1970 |
| 165 | 2004 Brazil flood, mainly Sao Paulo, Pemambuco, torrential rain, mudslide | Brazil | 2004 |
| 159 | Sarno flood and landslide | Italy | 1998 |
| 154 | KwaZulu-Natal | South Africa | 1995 |
| 144 | Aberfan disaster | United Kingdom (Wales) | 1966 |
| 141+ | 2010–2011 Southern Africa floods | Africa | 2011 |
| 138 | 2010 Colombia floods | Colombia | 2010 |
| 135 | Ozengeli, avalanche | Turkey | 1993 |
| 128 | Izumo, massive rain and mudslide | Japan | 1964 |
| 125+ | 2010 Leh floods | Jammu and Kashmir, Pakistan/India | 2010 |
| 123 | 2009 Jeddah Torrential rain, floods | Saudi Arabia | 2009 |
| 120 | 1991 Antofagasta Flood, mud swept | Chile | 1991 |
| 119 | 2007 Central and East Java torrential monsson rain, landslide, flood | Indonesia | 2007 |
| 117 | Masuda, massive rain and landslide | Japan | 1983 |
| 116 | Verdal, landslide | Norway | 1893 |
| 114 | Seoul, Inchon, heavy rain | South Korea | 1990 |
| 110 | Southern Federal District, heavy rain, landslide | Russia | 2002 |
| 104 | 1981 Laingsburg flood | South Africa | 1981 |
| 98 | Flood of the millennium | Poland, Czech Republic | 1997 |
| 94 | The Mameyes disaster | Puerto Rico (Ponce) | 1985 |
| 90+ | Columbus, Ohio flood on March 25, 1913 | United States | 1913 |
| 85+ | January 2010 Rio de Janeiro floods and mudslides | Rio de Janeiro, Brazil | 2010 |
| 81 | Holmfirth Flood—Bilberry Reservoir dam failure | United Kingdom | 1852 |
| 80 | Failure of Laurel Run Dam and flash flooding | United States | 1977 |
| 78 | Austin Dam failure | United States | 1911 |
| 73 | Kagoshima, mudslide and debris flow | Japan | 1993 |
| 72 | Gudbrandsdalen flood and landslides | Norway | 1789 |
| 70 | 2005 levee failures in Greater New Orleans | United States | 2005 |
| 51+ | 2010 northeastern Brazil floods | Alagoas and Pernambuco, Brazil | 2010 |
| 50 | Great Flood of 1993 | Mississippi River, United States | 1993 |
| 47 | 2011 Philippine flood | Philippines | 2011 |
| 47 | McDonald Dam failure | United states | 1900 |
| 43+ | Kyzyl-Agash Dam failure | Kazakhstan | 2010 |
| 42+ | 2010 Madeira floods and mudslides | Madeira, Portugal | 2010 |
| 37+ | 2010 Central European floods | Poland, Austria, Czech Republic, Germany, Hungary, Slovakia, Serbia, Ukraine | 2010 |
| 37 | Yuba City, California Christmas Eve flood, levee failure | United States | 1955 |
| 37 | 2009 Istanbul Floods | Turkey | 2009 |
| 35 | 2010-2011 Queensland floods | Australia | 2010–2011 |
| 31 | May 2010 Tennessee floods | United States | 2010 |
| 28 | 1959 Yellowstone earthquake, creating Quake Lake | Montana, United States | 1959 |
| 28 | Great Flood of 1951 | Kansas and Missouri, United States | 1951 |
| 26 | 2009 Karachi floods, monsoon flooding | Pakistan | 2009 |
| 20 | 2010 Arkansas floods | United States | 2010 |
| 19 | North Sea flood, storm surge | Netherlands | 1916 |
| 16 | 1974 Brisbane flood | Australia | 1974 |
| 13 | 2007 United Kingdom floods | United Kingdom | 2007 |