Trail Creek Preserve protects riparian habitat along the namesake creek that flows through it. In close proximity to Ketchum, the Preserve provides habitat for trout and several species of birds. As a Wood River Land Trust preserve, activities that would alter or degrade the vegetation along this stretch of the creek are prohibited, thus helping to maintain natural qualities in an otherwise significantly altered section of the creek. Protection of properties such as this is paramount in the effort to keep the water clean and healthy for people, fish and wildlife.