The second deadliest dam failure in U.S. history happened suddenly. The St. Francis Dam was a 205-ft-high concrete gravity arch dam located in San Francisquito Canyon, 30 miles north of Los Angeles.

The satellite signal was subtle but persistent. A decade of observations suggested that part of the Livingston Dam — a 2.5-mile-long earth and concrete structure about 70 miles north of Houston — was ...

The number of dams in the United States at risk of overtopping is increasing, "threatening their structural integrity and downstream communities," according to a new study from Florida. About 250,000 ...

There is a dam that’s been holding back water in Connecticut for more than 150 years and it needs some work for a number of reasons, according to the state and the agency that oversees the structure. ...

The department’s spokesperson, Wisane Mavasa, said an emergency safety assessment by its dam safety office confirmed that the ...