The DoF is a bit too shallow. I would like to see at least all the immediate ripples in crisp focus. It's a shot that has been seen many times before, so it has to be perfect to stand out.
Meets Challenge: 1 of 3. This is just barely low key, for me.
Technical: 3 of 3. Very good shot.
Emotion: 2 of 3. Action, suspense (literally, and in wondering what happens next), color. Good.
Awe: 0 of 1.