For three weeks in February, torrents of water rushed down the emergency spillway at Oroville dam, prompting fears that the entire structure would collapse. New images show what's left of the 914m long concrete spillway -- and the tremendous challenge that now confronts repair crews.
Tagged With spillways
To prevent massive dams from overflowing when heavy rains cause water levels to rise, spillways like this are used to drain water to the stream below. Without a true sense of scale, it looks just like the drain in your bathtub, but from a drone's bird's eye view, the opening to this spillway looks more like a black hole sucking everything in.