What would happen if the Hoover Dam failed? While a catastrophic collapse remains extremely unlikely, the real danger facing one of America's greatest engineering achievements is far more complex.

Honolulu officials urged residents near the Wahiawa Dam in Honolulu on Friday morning to evacuate the area immediately after a massive dam failure caused "potential life-threatening flooding of ...

Add Yahoo as a preferred source to see more of our stories on Google. The private owner of a dam in Wahiawa that city officials warned could fail and endanger North Shore residents amid a deluge on ...