Coulter Campground is a remote, boat-in-only primitive campground with 5 sites on Upper Holter Lake, accessible via private boat from Gates of the Mountains Boat Club or Holter Dam area, or by hiking Trail #257.

The campground offers vault toilets and basic amenities (no potable water) on a first-come, first-served basis with no fees, making it ideal for experienced backcountry paddlers and anglers seeking solitude within a scenic canyon adjacent to the Gates of the Mountains Wilderness.