Could the Johnstown Flood been prevented?
Could the Johnstown Flood been prevented? “Even if extremely high lake inflows had continued unabated, overtopping of the dam at its original design height would have been averted for around 14 hours,” Coleman wrote.
What city would flood if the Hoover Dam broke?
Downriver towns and major cities would see the most damage, in the event of the dam's physical collapse. Water flows would engulf many towns and growing cities around Mohave county, including Laughlin, Nevada; Needles, California; Lake Havasu, Arizona; and even as far south as Yuma, Arizona, and San Luis Rey, Colorado.