1931 China Floods

Between June and August 1931, catastrophic flooding across the Yangtze, Huai, and Yellow Rivers inundated an area the size of England, drowning or starving an estimated 1 to 4 million people — the deadliest natural disaster in recorded history, with a death toll higher than that of the 1887 Yellow River Flood (second place) by at least 100,000. Prolonged drought followed by record snowmelt and rain turned the rivers into inland seas, submerging 34 million acres of farmland — an area nearly 70% larger than the 1887 flood's coverage of 50,000 square miles — and displacing roughly 28 million people. Disease, starvation, and exposure in the aftermath claimed more lives than the floodwaters themselves. Post-event mortality modeling suggests the final toll may have exceeded 3.8 million.