The San Pedro Riparian National Conservation Area is a protected area located in southeastern Arizona, near the U.S.-Mexico border. It encompasses the San Pedro River, which is one of the last free-flowing rivers in the southwestern United States. The area is known for its rich biodiversity, including various species of birds, mammals, and plants, making it an important habitat for wildlife. Established in 1988, the conservation area spans over 57,000 acres and is managed by the Bureau of Land Management. It offers numerous recreational opportunities, such as hiking, birdwatching, and photography, attracting nature enthusiasts and researchers interested in the unique ecosystems of the Sonoran Desert.