I have a 46 year old pond with about 6 feet of muck. I also have two other ponds downstream with about 300 yards between each. I was thinking about building a series of haybale dams between each pond. And then taking a water pump with a pipe on the outflow with holes drilled in the bottom to pump water down through the muck to liquify it and drain it out with a bottom siphon. The hay baffles and ponds downstream should catch most of the muck and the downstream ponds would be a lot easier to clean out than the first pond. Has anyone else tried anything like this?