outdoor family,
Thanks for your comments. I do appreciate it. I have already stocked the pond, so I'm afraid that adding clay in the front would really cloud the water for a long time. I may try the bentonite.
The leaks are or rather were coming from a section of the dam where I had some difficulty (otherwise known as getting the dozer stuck!) and I suspect that the process of removing the stuck dozer affected the integrity of the dam.
Its dry there now due to the clay packing, although that may only be temporary. Based on your comments and Ric's theory which is very plausible, I think I should try the Bentonite as an insurance policy. Thanks.
