The best way to find out what areas are open to dispersed camping is to contact the nearest District Office to the area you wish to visit. Dispersed camping is not allowed in the vicinity of developed recreation areas such as campgrounds, picnic areas, or trailheads. Many people drive out on Forest Service roads and look for a clearing or a spot with a view. Do not drive on meadows to access your camping site. Drive on existing roads to prevent resource damage. Dispersed camping is allowed in a one-mile perimeter away from campgrounds and 200 feet from any stream. To prevent resource damage please keep your campsite within 150 feet from a roadway.
This place has free camping for up to 14 days, there’s no toilets or water, it’s super close to the North Creek Campground, there you can pay 10 a night and get bathrooms with water. If camping for awhile I’d pick Colon Hollow. There’s numerous spots to camp up and down the road