Pond Boss Forums POND CONSTRUCTION Renovating a Pond or Lake? Draining, Mechanical removal Muck, poor access

It is somewhat anaerobic in its current state but if piled up and left to dry out for several years it can become very fertile, tons of natural nitrogen in the stuff.

Having cleaned out a few ponds in the past, and you say there is no fragile area behind it, I would cut the dam and let it dry for a year or two, then the muck can be dug out and piled up somewhat for future use and the dam refinished just like new.