Rangersedge :

If you are having erosion as a result of wave action then I think you should think about taking steps to stop it. Rip-rap or clay and gravel or fabric liner with rock. We have the same problem on a pond where the erosion line is right where a seam exists from when we raised the dam and it is a problem. Will probably add a bentonite and clay strip over the seam then a fabric liner then more clay and then rock and rip-rap. I ran that by Mike Otto at the DFW meeting and he said it was a real good idea because if not fixed and the seam became wet through the dam the entire added part could slough off and the dam fail. ewest