Thank you all for the help. The pond original had a 13 foot deep hole at one end and the middle was 3.5 foot deep. The second controller came out and cut the high spot out and filled the hole in. It is now 9 foot deep in the hole and about 5 foot deep everywhere else. There was no visible signs of the leak. We put down bintonite and he put clay over it. He put it I. In 1 foot lifts and packed it. We added bintonite before every lift. I never have found any visual signs of a leak. One of the levees does have a few wet spots, but no water running. If my math is right, I am loosing about 100000 gallons a day. I think that is a lot of water and I should see it running out. I do have a ditch that runs along the backof one of the levees and it has trees along the ditch bank.i did look up soil flock. If my math is right I would need about 20 thousand dollars worth to seal the leak. I have about 40 already invested. I have very little money left to spend on this project. If soil flock is what has to be done, I will have to abandon this project till I can get more money.