We have 2 campgrounds on Butt Valley Reservoir. These campgrounds are in the mountains at 4150â€™. Ponderosa Flat is 3 miles from Hwy 89 on paved road. It has 80+ sites, including the overflow area. The Alder Creek Boat Launch and Day Use Area are about a mile past Ponderosa, on unpaved road, and Cool Springs Campground is another mile past that. Cool Springs has 25 campsites and 5 walk-in sites. Ponderosa and Cool Springs both provide beach access and are also heavily wooded in a beautiful mountain setting.