Marshall Lake Dispersed Campground offers free primitive camping with numerous dispersed sites near Flagstaff, suitable for RVs up to 24 feet, though the access road is unpaved and may have ruts or become impassable in wet conditions.

The area features a primitive boat launch on the east side and is open seasonally from early May through mid-October; note that camping must be on the opposite side of the road from the lake, and the northwest side is closed to protect waterfowl nesting habitat.

No facilities (water, toilets, tables) are available, so visitors must be fully self-contained and pack out all trash.