The San Pedro House is part of the San Pedro Riparian National Conservation Area (NCA). This area preserves a desert riparian system that is a remnant of a formerly extensive network of similar riparian systems throughout the Southwest. ("Riparian" refers to a place where a river provides water.)
The NCA has more than 350 species of birds and more than 80+ species of mammals. For more information about the area see http://www.sanpedroriver.org/.