Apparently the heavy rains were more than the engineering had expected and one dam couldn't take it any more . They had been building dams for generating power to sell to Cambodia ,but it doesn't serve every one. the lives it disrupts with these dams both for farming and such is short sighted . The tragedy happened in moments ,the dam didn't just start leaking it burst open . Do you live in the proximity of a dam/levee ? From the time it breaks ,how long is it going to take for the water to reach your home ? I'm reminded of the tsunami that hit Japan just a few years ago and the devastation that washed a city off the map almost. There is a dam approximately 10 miles from my home a significant water resource for surrounding communities , however it resides in an area that get's flash flooding . Given the worst of conditions significant rain and an earth quake , in spite of men's best engineering somethings just can't be factored in . It seems prudent to take a good look at the lay of the land to see if it can possibly be a real threat .