Water couldn't have been over foot or foot and a half deep. WOW.
Its a little deeper than that but not by much. First pic she is in probably 1' of water. The other pics she is in 2.5'-3' of water. Its a pretty sharp drop on that bank. Couple of times her tail was out of water when she was nose down. The ripples from her tail being out of the water is what caught my attention to begin with.
I am working on getting a underwater GoPro here tonight. If the rain doesn't mess the water up and she is still in that spot tomorrow I am going to go set up a camera on her for a hour or so.