I used the old satellite photos and this pond dates back to around 1980's. It was definitely not this full with water back then. But to me it's pretty cool.

I'll try to measure the muck here within the next couple of weeks. But was wondering what it will tell me and how much much should I have?

I've been trying to clean up all the dead trees around the pond so the banks are pretty clean and clear.

Lastly, the main thing I'm still concerned on is the depth and it it's suitable for fish and I won't have a fish kill coming winter time.