This has been a very informative thread. I have a similar problem on a new 1.3 acre pond in Austin, TX and have been tossing and turning for a week trying to solve how to repair it. Of course, after it not leaking for 6 weeks, I stocked it with $800 bucks worth of fish only to find a wet area behind the dam three days later. I am searching for a way to repair it without losing all my fish, but after reading this thread, that is appearing highly unlikely. Anybody have a reputable pond repairman to recommend in central Texas?
