It's been a while, but it sounds like you are a nice bunch, so I thought I'd try it out.

My pond is a natural flow through pond (I've learned that new term) and the water runs pretty constantly through it for about 10 months out of the year. We receive groundwater and runoff from a nearby reservoir (or so we are told). There is an exit drain that carries the extra water (my estimation is thousands of gallons a day)to the sewer system.

My question is about a sediment trap. I will try to figure out how to send a video, but the water drops from a large pipe onto a flat area and I'm thinking that a recessed bed, lined somehow, to catch the sediment might be a good idea and then we could empty it when it fills up. Thoughts and suggestions would be greatly appreciated!
Thanks in advance!