Thanks! This is exactly what I am talking about. The pipe is a vertical pipe sticking up out of the deepest part of the dam. I have a hard time explaining things via email, sorry about that. The leaves build up around the pipe and I have to get out there usually when it is raining like crazy and the pipe is clogged and clean it so water can get back to flowing properly. Is there any photo's of this trash rack you are speaking of?