I like the more detailed designs and think this would be good as a back drop or focal point of color to the side of the logo. I like #1 use of more color. I like the idea of capturing the essence of the physical beauty of this location with color and pictorial representation of giant redwoods and ocean or bay, or perhaps a sunset.... The "swoosh" in 3,8,6, and 2 has a duality of "track" or could represent the river that feeds the ocean, this is a nice element. Perhaps a combination of detailed scenery design with the straight forward ASM of #3 would be a nice combination...