Dennis forgot to mention Olympic NP. You would have hard time in Kala Loch but there is another campground on the west side near the turn to go to Port Angelus. Really nice state campground e/o Port Angelus. Hurricane Ridge up into the Olympic NP road is not far from Port Angelus. Ho Rain Forest is where they film Mick Dodge and it is a really beautiful spot. If there is a space in the HO it's a nice campground but DO NOT drive in to find out, Call the Park or stop at the visitors center on the Coastal part of the NP or look up on the National Parks website.
