The secret got out
Truly one of our favorite campgrounds in the Pacific Northwest. All of the campsites are very nice (though try to avoid the campsite nearest the dumpster as you will get an occasional smell of garbage). Make sure to spend plenty of time down by the river and take an hour to slowly walk the small loop trail.
Five or six years ago one could easily get a campsite on Friday evening, but last year (2015) we were unable to get a camping spot on a Tuesday morning! I asked the camp host why this was and he told me that the campground was featured on an outdoor show a couple of years ago and has been full ever since. Sad to have 'lost' our favorite campground, but it is still great for day trips from Portland.