At approximately 7.3 miles, you will see a pull-over spot on your left hand side. There are better parking spots ahead but you can park here if the others are taken. Note that the walk to the creek can be dangerous on the road so be careful. See https://www.bing.com/maps?osid=48507925-c575-475c-9e02-368cc1ef5b23&cp=47.81131~-122.218094&lvl=19.020245&dir=30.580362&pi=-10.42401&style=x&v=2&sV=2&form=S00027
Keep driving for another quarter mile to identify other parking spots along the creek on your right-hand side.