Buckseller,
It is nice the sediment pond did its job. Much easier to clean out a small pond than a big one. I was thinking I could go either way on the drain pipe on the sediment pond, a slanted single pipe or "L" style stand pipe. The �L� style might make construction a little easier because the water could run through the pipe during construction and then once the dam is full height could add the elbow and vertical section. The single slanted pipe is nice because it has no joints for potential leakage.
If you don�t mind me asking, what is the diameter of your main pond drain vs. the sediment drain? Since the main pond pretty much receives all of its water from the sediment pond drain I would think you would never exceed the main pond stand pipe level if you were just a few inches larger in diameter. The extra inches could account for straight rainfall onto the pond surface and some run off from the sides.
Thanks for your feedback!
Luke
