Sand Island Campground is the primary put-in for San Juan River float trips, featuring 27 first-come, first-served campsites ($15/night) with fire rings, picnic tables, vault toilets, and seasonal water.

The campground offers a boat ramp for river access, cottonwood shade, and proximity to the Sand Island Petroglyph Panel, making it an ideal base for both paddlers launching multi-day river trips and anglers accessing the San Juan River.