Originally posted by patrick:
After looking at it one more time (I've looked at it a thousand times) it looks like the water may be seeping under the dam at ground level.
Patrick,
If that's the case, it should very easy to fix.
If your dam is low... that is to say, the top of the dam is only a foot or 2 from the water line... the dam may need compacting.
You indicated that the soil was on the dry side when the dam was constructed. Dry soil, even clay, does not compact well. Water seeps into it and "floats" it, preventing compaction. If you can add weight to the top of the dam, it will compact it very quickly. Building up soil on top of it is the best way to add weight. A foot or 2 of soil added to the top of the dam adds a huge amount of pressure at the bottom where it is apparently leaking.
If your dam is already well above the water line, all bets are off.
