Just something I thought I would share. When I first built the pond I laid the liner on the ground and laid rocks on top. I found that it made it easy for stuff to wash in the pond plus I had a hard time hiding the liner between the rocks and the water line. A very smart person on another forum suggested I do this. Please don't mind my lack of drawing ability LOL. The pic on the left is how it did it to hide the liner, prevent run off, and allow me to add another 2-4 inches of water in the pond above grade. It has worked great! I was also able to reduce the amount of rocks in the water using this method. The pic on the right is the typical way and the way I initially did it to show the difference. Essentially you are creating a lip or bowl with the liner edge rather than laying it flat on the outside of the pond.
Just wanted to share this for any new pond builders.
Just wanted to share this for any new pond builders.