Bill,

It is my understanding that the liner will not help you in this situation. The water will naturally seek it's own level, seeping under and around the liner. I am no expert though.

What I know for sure is that you have a great looking lake when it is full and can certainly understand your frustration as you try to keep it there. Otto should be able to give you a real good second opinion. If I wasn't two thousand miles away from him he'd be building ours. He is in your back yard by Texas standards - give him a ring.