About a 1/3 of the pond is over 10' for sure. My kayak paddle is 8.5' and I could not reach the bottom with my arm deep in the water. As far as the muck, the area where the "beach" is, from walking around feels like 3"-6" No idea what the deeper areas are like. I did try to dig a deep pit with the excavator to try to make a place for fish, but quickly realized I could not reach far enough out to justify doing it.

Maybe I should invest in an aerator and just kill and restock?