List of flash floods

This list of notable flash floods summarizes the most widely reported events.

Date Fatalities Cause Description
March 11, 1864 270 dam failure Great Sheffield Flood, Sheffield, England
May 31, 1889 2200 dam failure Johnstown Flood Johnstown, Pennsylvania, U.S.
June 14, 1903 247 thunderstorm Heppner Flood of 1903, Oregon, U.S. Second deadliest flash flood in the United States; killed almost a quarter of the town's residents.
July 11, 1912 8 thunderstorm Mazuma, Nevada Postmistress among the dead. Relief efforts included a fund set up by William Randolph Hearst.
January 15, 1919 21 tank failure Great Molasses Flood, Boston, U.S. A 8-to-15-foot (2.4 to 4.6 m) wall of molasses from a collapsed distillation storage tank moved through the streets at 35 miles per hour (56 km/h) killing 21, injuring 150
February 19, 1938 21 thunderstorm Kopuawhara flash flood of 1938, Mahia Peninsula, New Zealand: a temporary camp for rail workers next to a river was hit by a 5-metre (16 ft) high wall of water[1] already swollen by heavy rain associated with Typhoon Haikui.[2]
August 15, 1952 34 heavy rain Lynmouth Flood, England
June 17, 1965 0 heavy rain 1965 Philmont Scout Ranch flash flood, Philmont Scout Ranch, New Mexico
November 25, 1967 464 heavy rain 115 to 129 millimetres (4.5 to 5.1 in) rain in 5 hours at up to 30 millimetres (1.2 in) per hour near Lisbon, Portugal[3]
November 19, 1983 10 heavy rain maximum rate of 24 millimetres (0.94 in) in 30 minutes near Lisbon, Portugal with similar intensity of 1967 event; much lower fatalities due to lessons learned[3]
January 4, 1971 32 monsoon Kuala Lumpur floods, Malaysia
June 9, 1972 238 dam failure Black Hills flood, South Dakota, U.S. 15 inches (38 cm) in 6 hours
July 31, 1976 143 thunderstorm Big Thompson River flood, Colorado, U.S.
August 11, 1979 1800-25,000 dam failure Machchu-2 dam failed due to heavy upstream rain, washed out the town of Morbi and nearby villages of Gujarat, India. Estimated deaths ranged from 1800 to 25000 people. Considered worst flash flood of history.
June 14, 1990 26 heavy rain Shadyside, Ohio, U.S.[4]
June 16, 1990 4 thunderstorm Duck Creek Floods of 1990 near Davenport, Iowa, U.S.[5]
August 12, 1997 11 thunderstorm Antelope Canyon, Arizona, U.S.
July 20, 1998 63 heavy rain Jarovnice, Slovakia Combination of heavy rain by three clouds sitted on each other and collapse of dam formed by debris caused flood wave inundate the unprotected Romani settlement
October 18, 1998 31 heavy rain San Marcos, Texas, U.S. rains totaling from 15 to 30 inches (380 to 760 mm)[6]
August 30, 2003 6 heavy rain Jacobs Creek Flood, Kansas Turnpike near Emporia, Kansas, U.S.
August 16, 2004 0 heavy rain Boscastle flood, Cornwall, England
August 6, 2006 350 heavy rain eastern Ethiopia, tens of thousands displaced[7][8]
August 13, 2006 125 heavy rain southern Ethiopia, hundreds of thousands displaced[7]
July 3, 2007 64 Sudan floods
November 2, 2007 0 heavy rain Mount Rainier National Park, Washington, U.S.[9]
June 12, 2008 0 The June 12–13, 2008 floods around Duck Creek in Davenport, Iowa, U.S.[10]
August 4, 2009 0 thunderstorm The 2009 Kentuckiana Flash Flood resulted from 3 to 6 inches (76 to 152 mm) of rain falling in less than an hour near Louisville, Kentucky, U.S.
September 9, 2009 31 heavy rain Turkish flash floods.
September 19, 2009 10 heavy rain 2009 Southeastern United States floods included flash flooding around Atlanta, Georgia, U.S.[11]
September 26, 2009 100 tropical storm Metro Manila primarily Marikina city, Taguig City, and Pasig City; and many municipalities of the provinces of Rizal, Bulacan and Laguna taking more than a hundred lives and leaving thousands of affected residents homeless. It also submerged several municipalities under feet deep of water for several weeks. It was caused by Typhoon Ketsana.
October 1, 2009 37 heavy rain Giampilieri, Messina, Sicily. See Also 2009 Messina floods and mudslides
October 10, 2009 October 10–13 in Northern Luzon causing major landslides in the Cordillera Mountains (Philippines), and submerging 80% of the Province of Pangasinan.
October 2009 0 heavy rain In late October, a rainy nor'easter caused several flash floods in Southeast Virginia (U.S.) and injured over 100 people.
November 25, 2009 100 more than 100 people died in flash floods that swept away highways and neighborhoods in the city of Jeddah, Saudi Arabia, which was caused by heavy rains.[12]
February 20, 2010 42 heavy rain 2010 Madeira floods and mudslides: 108 to 165 millimetres (4.3 to 6.5 in) of rain fell in 5 hours, much more than the monthly February average of 88 millimetres (3.5 in). At least 42 people died, at least 100 injured, and at least eight people went missing.
April 2010 April–May: The great Nashville, Tennessee, U.S., flood. Water in the Cumberland river rose, flooding downtown Nashville and surrounding areas.
June 11, 2010 20 heavy rain The Little Missouri River rose over 20 feet in only a few hours, 2010 Arkansas floods
July 24, 2010 0 dam failure Delhi Dam on Iowa's Maquoketa River breached after 9 inches (230 mm) of rainfall. 8,000 people evacuated and 15 ft. chunks of highway broke off and swept down river. Contributed to flooding the Mississippi River in Davenport, Iowa.
July 2010 1400 monsoon Mid–July till Mid-August, Pakistan's three provinces were badly affected during the monsoon rains when dams, rivers and lakes overflowed killing at least 1400 people and affecting 3.5 million people.
August 6, 2010 180 cloud burst Leh, India. More than 180 people are reported to have died with 400 missing and 300 injured due to flash floods, caused probably due to cloud burst. Injured and stranded public have been airlifted by Indian army.[13]
October 4, 2010 7 chemical plant accident flood caused by the Ajka alumina plant accident in western Hungary[14] A dam wall collapsed, freeing about one million cubic metres (35 million cubic feet) of highly alkaline liquid waste, called red mud, from the Ajkai Timföldgyár alumina plant in Ajka,[15][16] Veszprém County. The mud was released as a 1–2 m (3–7 ft) wave, flooding several nearby localities, including the village of Kolontár and the town of Devecser. The flood killed seven persons and the high pH (~13) of the sludge burned several hundred people and devastated more than 40 km2 of ground in the basin of the Danube river.
October 18, 2010 0 heavy rain St. Lucia, West Indies:[17] The flood displaced about 500 people and received immediate assistance from local government and international organizations. No fatalities or injuries were reported.[18]
July 27, 2011-July 28, 2011 1 heavy rain Dubuque County, Iowa - Jo Daviess County, Illinois, United States.[19]
January 11, 2011 35 heavy rain 2010–2011 Queensland floods, Australia[20]
July 7, 2012 172 heavy rain 2012 Russian floods Krasnodarsky krai, Russia[21]
August 7, 2012 89 monsoon 2012 Philippine floods Monsoon enhanced by Typhoon Haikui brought torrential rain and floods to Metro Manila and nearby provinces[22]
April 1, 2013 101 rain storm 2013 Argentina floods For five hours there was extremely heavy rainfall on northeastern section of Buenos Aires Province, Argentina, resulting in several flash floods that claimed the lives of at least 101 people. Greater La Plata was hardest hit with 91 reported deaths, and Greater Buenos Aires reported ten deaths. Is the worst flooding in La Plata's history.[23]
November 17, 2013 18 heavy rain Cyclone Cleopatra, Northeast Sardinia. See Also 2013 Sardinia floods
April 29, 2014-April 30, 2014 2+ heavy rain Alabama, Florida
June 7, 2014 73 rain storm 2014 Baghlan floods High rainfall contributed to the flash flood which destroyed hundreds of mud homes.[24]
June 27, 2015 1 heavy rain 2015 Philmont Scout Ranch flash flood, Philmont Scout Ranch, New Mexico
July 7, 2015 0 heavy rain 2015 Ghost Ranch flash flood, Ghost Ranch, New Mexico
September 14, 2015 16+ rain storms 2015 Utah floods Sudden downpours caused flash flooding of canyons in Hildale, Utah and Zion National Park, killing at least 16 and possibly 20 people.[25]
October 25, 2015 17+ rain storms Alexandria and Nile Delta region of Northern Egypt. Strong rains on October 25 and November 4 caused flash flooding and resulted in the deaths of at least 17 people, including five electrocuted when a tram power line collapsed into a puddle.[26]

See also


  1. "19 February". Today in History. New Zealand History. Retrieved 2012-10-23.
  2. "Floods: Kopuawhara". New Zealand Disasters. Christchurch City Libraries. Retrieved 2012-10-23.
  3. 1 2 Clifford Embleton; Christine Embleton-Hamann (1997). Geomorphological hazards of Europe. p. 404. ISBN 978-0-444-88824-2.
  4. Shadyside, Ohio Floods of 1990 (Report). NOAA. Retrieved May 30, 2011.
  5. "Flood Facts". QC Memory. Retrieved 2009-04-16.
  6. "Floods in the Guadalupe and San Antonio River Basins in Texas, October 1998". USGS. Retrieved 2011-10-15.
  7. 1 2 "Flash floods kill 125 in Ethiopia". BBC. 2006-08-14. Retrieved 2011-10-09.
  8. "Ethiopia Hit by Flooding in North, South and East". Worldwatch Institute. 2006-08-14. Retrieved 2011-10-09.
  9. "November 2006 Flooding". NPS. Retrieved 2008-01-08.
  10. "Duck Creek Flooding Closes Davenport Streets". Quad Cities Online. Retrieved 2011-10-09.
  11. "Southeast United States Floods, September 18-23, 2009" (PDF). U.S. National Weather Service. May 2010. Retrieved 2012-03-20.
  12. Arab News, Jeddah flood toll 106 (Report). SRPC. Retrieved December 2, 2009.
  13. Cloudburst In The Leh WorldSnap
  14. "Red mud spill in Veszprém County". 5 October 2010.
  15. "Hungary threatened by 'ecological catastrophe' as toxic sludge escapes factory". Telegraph (UK). 5 October 2010.
  16. "Red sludge floods towns in Hungary". Associated Press. 4 October 2010.
  17. "Red Cross responds to St Lucia floods". Caribbean 360. October 18, 2010.
  18. "DREF operation final report" (PDF). International Federation of Red Cross and Red Crescent Societies. 3 June 2011. Retrieved 2013-03-18.
  19. Historic Heavy Rain and Flash Flooding in Dubuque and Jo Daviess Counties 07/27-07/28/2011
  20. "Toowoomba swamped by deadly 'inland tsunami'". Australian Broadcasting Corporation. January 11, 2011. Retrieved 2011-10-09.
  21. "Russia floods: Putin orders inquiry over mass deaths". British Broadcasting Corporation. July 8, 2012. Retrieved July 8, 2012.
  22. "Monsoon enhanced by 'Haikui' to continue bringing heavy rain to NCR, 12 other areas". GMA News Network. August 7, 2012. Retrieved August 7, 2012.
  23. "Deadly rains flood capital, Greater [Buenos Aires]". Buenos Aires Herald. 3 April 2013. Retrieved 25 April 2013.
  24. "Afghanistan flash flood kills dozens in Baghlan province". BBC. 7 June 2014. Retrieved 7 June 2014.
  25. Reavy, Pat (16 September 2015). "16, possibly 20 die in devastating southern Utah flash floods". Deseret News. Salt Lake City. Retrieved 16 September 2015.
  26. "5 dead as heavy rains pound Egypt's Alexandria". Yahoo News. Retrieved 2015-11-08.
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