anthropic, I've heard catfish are good eating, but don't they have stingers? I want to keep the ponds safe for swimming also.

Quarter Acre, that's a good question about depth, I don't have an answer to that yet. Any ideas on the best or easiest way to measure pond depth?


Matzilla, except for the upper pond which overflows through what's now a very small stream down to the middle pond, there aren't any other signs of pond overflow. (the middle and lower ponds overflow piping seems to work well). I haven't seen any otters, herons, or cormorants yet, we'll occasionally get a few geese stop by for a day or two, so far that's been about it, but I don't get monitor it night and day, so who knows what's happening when I'm not watching it.