We built a new pond this summer and it is filling up nicely. Unfortunately the way our farm lays a ton of the run off gets trapped when it hits the horseshoe part of the side wall. It is hard to describe but part of the side of the pond has been elevated to keep the water in once full. It happens to be the side that we get the most run off. is there a way to trench a pipe that would allow water to flow into the pond but not allow water to exit the pipe out of the pond ? The difference in height is approximately 3 ft so on a couple of occasions we had 3 feet of standing runoff that was on the other side of the side wall for the pond. If I trenched a pipe into the pond it would catch the runoff and help fill the pond. When the pond got full I could cap it possibly. The pond will be 8ft deep when full and is around 6ft right now.
I thought about cutting a lot of the dirt off and lowering it but if I did that it would never reach to overflow pipe and would run out into the field before it reach its maximum depth


thanks for any input