On this day in 1864, the Dale Dyke Dam in Sheffield broke, causing one of the largest floods in English history. 650 million gallons of water swept down Loxley Valley and through areas of Sheffield. The flood destroyed 800 homes and killed around 293 people, thus making it the largest man-made disaster to befall England, and one of the deadliest floods in history. Individual stories from the disaster are particularly tragic. For example, Joseph Dawson found the currents too strong and was unable to save both his wife and two day old baby boy – the Dawsons’ unnamed child became the first victim of the floods. The destruction afterwards led one observer to remark that Sheffield was “looking like a battlefield.” While this tragedy is often forgotten in English history, many Sheffielders take this day to remember what once happened to their city.