Pond Boss Forums INTRO Questions & Observations Pond level

It might be that the clay hasn't reached saturation point yet if it's a new pond. All ponds leak to some extent, but not that much. If you see the level still dropping that quickly after a month, then I'd start to get concerned.

The best way to make sure a pond will hold water like a bathtub is to make sure the clay has the proper water content before compacting, and use a sheepsfoot roller or multi-tired pan scraper that is heaped with dirt for weight. Tracked dirt moving equipment doesn't have the necessary PSI ground pressure to properly compact soils.

You say you have a really good clay bottom, but does that clay continue all the way up to the surface water level of the pond?