Harlequin Campground is a walk-in riverside campsite located 4. 5 miles up Stehekin Valley Road along the Stehekin River, offering shaded sites with picnic tables and fire pits.

The campground features pit toilets and garbage containers but no running water—visitors must filter or boil river water.

Access is by foot, bike, or shuttle bus only (no vehicle access to campsites), and reservations are required during peak season (late May to mid-September); note that many sites flood in late May and June due to spring runoff.