We camped at Billy Creek in March 2019.  We were the only ones there which made it fabulous!  We set up camp right above the river and got to hear the river going over the rocks the whole time.  There was a easy and short little trail down to the river and lots of large rocks to hang out on.  The campsite has tons of big trees.  Each site has a fire ring, picnic table and grill.  Water is available, but not at each spot.  No electricity, no flushing potties, no showers, no sewer hookups, no wifi.  There are latrine bathrooms (2) in a small building near the entrance. There is an abundance of hiking trails, 4 wheeler/motorcycle trails and many trails that a full size SUV can do.  Lots of forest service roads to explore.  We stayed 3 nights and only saw people one day that came in to meet up and ride 4 wheelers.  We will definitely go back!