[spokeshave]

The emergency spillway for that dam is a few hundred yards to the northwest of the dam, over solid earth.

That "solid earth" is being washed away

see this :

https://www.youtube.com/watch?v=Nq_CJNoIdvo

[21twelve]

https://www.youtube.com/watch?v=wTyCPPqv5pc

Here is another video showing the main spillway with the dam in the background. From other photos I’ve seen it looked like the spillway was on rock. This video shows part of it is, but it looks like a lot of soil/weak rock is being washed away between the spillway and the toe of the dam.

If too much material gets washed out below the toe, the dam could go. Yeouch.

[rlmorel]

I saw that, and my gut tells me this dam is doomed. The water will find a way, and we are going to be helpless to do anything about it. Those people in the path should leave immediately.