In all honesty, this one is a re-shoot.
Horrible lighting to begin with never helps. The scene is also quite busy and it's hard to focus on a particular subject. The only angle to help this here is to get closer, I'm afraid. Sacrifice some of the foreground because it is messy and distracting.
Tip from a seasoned outdoor photographer:
Don't even bother going out to grab water shots if it's partly to mostly sunny. I don't care what filters you run, what aperature you go down to ; you can't do anything if the sun is hitting the water. You end up stopping down so much, you black out everything else and slowing the shutter speed more just overexposes the water again. It's a cycle you can't escape from unfortunately...
Unless you can shoot 100% of the scene in shadow, wait for a cloudy or foggy day. Foggy days seem to be perfect for water stuff actually. Muted light, muted colour so you can expose for longer and nothing gets over blown.