Overview Sunnyside Campground is located along the southeast side of Cougar Reservoir at 1,700 feet in elevation. A large grove of conifers provides shade to these campsites. Motorhomes and trailers not recommended due to the steep entrance into the campground. Recreation Hiking in the area is outstanding in nearby Three Sisters Wilderness, along Rebel Creek. Hikers will enjoy exploring other trails including the French Pete Trail, Box Canyon Trail, Indian Ridge Lookout, and several day hikes within the Cougar Recreation Area. After a fun day on the lake, relax and enjoy Terwilliger Hot Springs, a day use area along Rider Creek. Facilities The campground offers vault toilets and garbage collection. Individual campsites include a fire ring and picnic table. Easy access to the lake is possible from this scenic location. There is no water available, campers will need to bring enough for the duration of their stay. Natural Features Situated near the South fork of the McKenzie River on the Willamette National Forest, Cougar Reservoir is part of the Cougar Recreation Area. Wildflower and wildlife viewing are abundant.
Source: rec_gov · last verified 2026-05-19