Thanks for the replies.... yes, it is a straight shot they the dam. I thought about extending the pipe down the dam wall, but do they make a 15” flexible corrugated pipe? Or would I just do like a 45 degree coupling to turn it down and straight sections from there? The tailrace sounds like a good idea as well. Also, would I need to put anything around the pipe at the entrance into the dam on the pond side? To keep it from possibly washing out around it from maybe suction? Thanks!!