Pond Boss Forums POND CONSTRUCTION Building a dam If your dam is wide enough...?

On the question of excavating the south side, if your material is good enough there is no reason to remove it, however, if any of the material is undesirable it needs to be removed. On the question of the core trench, your soil sounds ideal, however make sure that the old and new dirt gets sewn in. It is really not a very large expense for a core trench and is usually worth it.