So getting a new pond cut in and I am not too familiar overall with building a pond. They are building a pretty good size dam now. I have a few questions. 1st do I need a an overflow or can I use a bricklined spillway on ends of dam to control water level? Secondly what is the best initial grass for erosion control around the pond, brown top millet / winter rye mix? 3rd the sides are really steep currently but the sides are held together with roots, vegetation. If we cut down the sides we will lose that built in erosion control. Open to any information. Thanks.