Pottsy- I would say that after a good rain when the makeup is really running it looses about 1.5' in about a week with low makeup rates sometimes.
Bob- The pond is about 5yrs old with the latest modifications done this spring.
Bob Lusk- Thanks for that description for you have helped me try to understand it. I know I shoudl find the local pro but sometimes just try to get by with what I got and from answers I get from groups like this awesome bunch.
It seems to have stopped or at least slowed down alot because the seepage would leave a small stream down the dam or retention wall(?????) Now there is no leak stream or wet spots and the level has maintained now for a while. Hmmmmmmm??
Darin