McDowell Sonoran Preserve The Scottsdale McDowell Sonoran Preserve is a large, permanently protected, sustainable desert habitat that includes an interconnected network of non-motorized, multi-use trails (hike/bike/horse) accessed from multiple trailhead locations. Source: City of Scottsdale SiteThe McDowell Sonoran Conservancy is the official partner of the McDowell Sonoran Preserve. Through a unique partnership with the City of Scottsdale we help ensure all visitors a safe and enjoyable visit to the McDowell Sonoran Preserve. Source: MSC Site