Hello and thanks for the support,

The pond dam is built in soil with a good red clay content. I think the issue is the location. It is constructed on a significant hillside and is approx. 16' from the top of the dam to the deepest part of the pond. The pond fills and then the water pressure forces the water (I suspect) through the bottom of the pond. It then surfaces in the flat area below the pond. Additional clay on the bottom of the pond might seal the seepage however I don't think it will relieve the pressure exerted by my wife! She has had it with the swampy mess near what is the entry to our property as-well-as the amount of money I have spent on the project over the years. A good pond boss may never give up...but a good husband better know when to!