Thanks Bob,
Dam breach has never really been a concern to me, my pond was a sand mine originally and really has no dam to speak of. All sides are up hill 5'-6' to level ground with the exception of the area that is the low bank area and is a natural spillway. There it gently slopes off two to three hundred feet dropping maybe 10'-15' in that span to a creek. The whole area has a good stand of small hardwood trees and seems solid, I don't see anything ever moving. And when it did spill over it would be 15' wide and 1"-2" deep. But I am not a pond engineer by any means.