FireIsHot,
We had 3 weeks back to back 15+ inch rains a little over a year ago, I bet it was the third event, 24" in 24 hours that did it.
It was the rain that blew out my smaller 1 acre pond. It was constructed with 2 overflow pipes (6") they must have gotten clogged with something and just eroded out, took the whole pond. It was that way when I bought it and has been corrected now.
Rob
