Pond Boss Forums POND CONSTRUCTION Building a dam New pond seepage. Is this normal?

I agree with Mike Otto, but it's the amount of leakage that is in question. I'd take a large pan, fill it to the brim with water, and monitor evaporation rates at the pond. Put a fence post with a yardstick in the pond at the water level so you can accurately measure the amount of water rise or fall - you can't do it accurately by looking at the shore line.

If it gets to be a lot more than evaporation, then you'll have concrete numbers to talk to the pond builder about.