Well, without any rain, the pond filled up from ground water to about 6 ft deep. The rest was from runoff...
I have not checked the depth yet, but a good guess would be that it's 14 ft deep at its deepest point.
There are no creeks or ditches leading to the pond. The terrain is very very flat.
Here are a couple of aerial shots from 2006 when I was struggling with the small pond, the large pond was not started yet. It will give an idea of my surroundings:
Aerial None of those farmers' ditches run into my ponds...
