Torchy:
This is not a possibility for me because there is a circular road around this pond that is bermed with no culverts. There is no possibility of a high water connection. It is an excavated sand pit that was completely sterile in October. Unless the critters put on their ice skates this past winter there has to be another solution. It is approximately 300-feet from the nearest pond containing fish. The area between ponds is heavily wooded.
I'm not offering any theories, just trying to eliminate a few of the more easily explained possibilites.
