Meadowlark. I hope your pond camara has done its job. On your question about pond dam leaks we fixed a similar problem with drilling mud.It comes in sacks and is dry bentonite clay.It was called aqua-gel. We had a sand that was leaking into the dam at the bottom. We used 5 or 6 sacks on a 5 acre pond.The clay powder when wet did not cloud the water as it sank toward the bottom and toward the leak. In about a week the clay had been pulled to the leak and mixed with and covered over the sand. Good luck and report your results. Thanks ewest.