Rad, there is no specific dam site on the pond. The pond is 1 acre kidney shaped and has a levee surrounding it. No watershed water gets in the pond. Only well and rain water. The water level in the picture is as high as it gets because the bottom-fed overflow keeps it there. I have the water well to keep it topped off and I never let the water level get more than 5 inches below overflow. As for the grass, I was really proud of myself for all the effort it took to train the bermuda to grow down the sides to the water. I thought for sure I had the erosion problem prevented so you can imagine how sick I was when I the first signs of erosion.