From the website:
Located on the Lower McCloud River at an elevation of 2300 feet, this remote campground has 16 sites with tables and fire rings, flush toilets, and drinking water. The dirt access road from Lake McCloud is very rough and rocky. Low clearance vehicles, trailers, and RVs are not advised. 14 day limit. $10 per night. No reservations. Features: This campground is situated on an historic site used by Native American tribes and various land owners over the years, including the families of Whittier, Fitzhugh, and William Randolph Hearst. Visitors can explore and identify the remains of several buildings, foundations, rock walls, and an orchard that still produces fruit. The Lower McCloud River is a world renown native trout fishery which makes this camp a favorite for anglers. California Fish and Game regulations for this section of river allow only the use of artificial lures with barbless hooks.
According to local lore the site's name is derived from the first two initials of the first names of the three daughters of one of the previous owners. It is pronounced "Uhdeenuh". One word, soft 'A' hard 'E'.
The water is potable