The deadliest flood in the nation's history was caused by a dam break upstream from Johnstown, Pennsylvania, according to the National Oceanic and Atmospheric Administration. More than 2,200 people in ...

1928: St. Francis dam disaster. The St. Francis Dam disaster is known as one of the worst failures of civil engineering in the 20th century. The dam was built to create a reservoir northwest of ...

Born on Sept. 11, 1855, in Belfast, Ireland, Mulholland ran away to join the British Merchant Navy at age 15 after his father beat him for poor performance in school. After four years at sea, he ...

Did Helene cause the deadliest flooding in NC history? Here's what we know about flood records in the state and across the nation.

Here are Alabama's five worst flooding events in history: 1929—The Elba Flood. Alabama's worst flood on record hit the town of Elba in March 1929, submerging the city under up to 18 feet of water.

Here are Alabama's five worst flooding events in history: 1929—The Elba Flood. Alabama's worst flood on record hit the town of Elba in March 1929, submerging the city under up to 18 feet of water.