Dam Break: Eugene, Oregon
Eugene will become a mere memory in the event of an earthquake. Forget that the city could be severely damaged if shaken by a possible 9.0 quake in the Cascadia Subduction Zone, a major earthquake hot spot in the Pacific Northwest. It's what could happen if any of the nine dams in the region are compromised by the quake: 40 feet of water cascading through the city, Hurricane Katrina–style. With intense flooding, buildings destroyed beyond repair, bridges collapsing, highways non-navigable, and homes left unrecognizable, most of the 137,000 residents would be affected and damages could be as high as $10 billion dollars.