Wilderness Landscape & Natural Heritage
St. Rosalia Preserve spans approximately 1,000 acres in southeastern Arizona near the town of Sonoita. This private preserve protects a rare stretch of riparian habitat along Sonoita Creek, a vital water source in the arid region that supports diverse plants and animals native to the Madrean Sky Islands ecoregion. The preserve features a blend of Sonoran desert, oak woodlands, and riparian forest environments distinguished by cottonwoods, sycamores, and willows lining the creek. Established in the mid-1990s through cooperative conservation efforts, St. Rosalia Preserve balances habitat preservation with limited public access by appointment. Visitors to the preserve can enjoy peaceful hiking along gentle trails that follow sections of the creek, excellent birdwatching including sightings of species such as the threatened southwestern willow flycatcher, and seasonal wildflower displays. The preserve is also important for supporting native mammals such as javelina, white-tailed deer, and bobcats, relying on this protected corridor. While not a traditional public park, St. Rosalia Preserve works to promote environmental education and habitat restoration in one of Arizona’s ecologically significant areas. Its quiet, undisturbed landscapes attract naturalists and photographers looking to experience the unique mix of riparian and desert ecosystems away from busier tourist destinations. The preserve stands as an example of private conservation efforts complementing public lands to safeguard the fragile environments of the American Southwest.
