I love your photography, Dave, perhaps because it is so similar to my own, just an ocean apart!
This mountain stream is wonderful. Like the Snowline photo, though, I think it can be "opened up" a bit as well. By increasing the Fill Light, more liveliness would be introduced to the shadows and mid-tones giving it a little more sparkle. I would also explore brightening the shadowed areas of the stream just slightly so as not to affect the highlights. This can be done with the Tone Curve using the Lights adjustment. Even +10 might be enough.
Hope this helps.