Look for other users spread out to the east. You can also get there via West End Road. One visitor counted about 25 sunbathers. Rocks, long drive from the coast. Two swimming holes near the village of Maple Creek and the nearby Salyer Rest Area, both off Highway 299, are given high marks by skinny-dippers.
People are pretty tolerant around here.
Access to Maple Creek, which consists of a few buildings, is via a small road that starts in Blue Lake. The same drive can also be made from Kneeland, which can be reached from Arcata. From Highway 101, find and then go up Fickle Hill Road to the Maple Creek exit. Take the exit down to where you see cars pulled off, then park and walk upstream past a clothed beach to the nude-swimming hole. A rocky, somewhat steep but good trail will bring you down to the river.