Great Sheffield Flood
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The Great Sheffield Flood was a flood that devastated parts of Sheffield, England, on 11 March 1864, when the Dale Dyke Dam broke as its reservoir was being filled for the first time. At least 240 people died and more than 600 houses were damaged... Wikipedia
Date: March 11, 1864
Deaths: 240+
Cause: Crack in embankment; cause of crack never determined
Property damage: 600+ houses destroyed
Location: Sheffield and Dale Dike Reservoir