– 1931 China floods: Deadliest floods in history caused by heavy rainfall and snowmelt; death toll ranges from 1 to 4 million.
– 1975 Banqiao Dam Failure (China): Triggered by Typhoon Nina; estimated fatalities between 26,000 to 240,000; poor infrastructure cited as a factor.
– 1889 Johnstown Flood (U.S.): Result of south Fork Dam failure; over 2,200 lives lost due to maintenance negligence.
– 1927 Mississippi River Flood (U.S.): torrential rains led to levee breaches affecting over half a million people.
– 1937 Ohio River flood (U.S.): Major urban areas submerged with over one million evacuations and nearly 400 deaths.
– Other events include Hurricane Katrina’s devastation in New Orleans (2005),Bhola Cyclone storm surge impacts on East Pakistan/Bangladesh killing over ~300k fatal globally extendings approaches(global population discussion seem dimension ..Others )