I think that your choice of placement of the watermark GREATLY decreases the image's attributes. My eyes want to go to the waterfalls, but right below them are those bold ugly letters, and my eyes can't make it to the falls. Maybe on the lower right side? I don't know, perhaps you were trying to hide the cars and stuff there?
Anyway, I can see the picture is very nice, I lived in Ca over 10 years and never went there. I think this does a good job of portraying the place, which in turns makes me feel bad about not ever taking the trip from the bay.
I actually haven't been there in over 10 years myself -it's beautiful there. If i get the chance to get caught up with all my photo editing I promised myself to drive around for a weekend and just shoot for fun. The thing is since i've joined TPF it's been cutting time away from the editing..