Tens of thousands evacuated over fears of spillway collapsing at tallest dam in California

COURTESY: RT's RUPTLY video agency, NO RE-UPLOAD, NO REUSE - FOR LICENSING, PLEASE, CONTACT http://ruptly.tv

Tens of thousands of people have been fleeing California towns downstream from the Oroville Dam after fears of an imminent collapse of its spillway prompted an evacuation order. Authorities are seeking to stem the breach with the help of helicopters.