Ciénega Creek (English: "Hundred Springs Creek" or "Marsh Creek") is an intermittent stream located in the Basin and Range region of southern Arizona, and is one of the most intact riparian corridors left in the state. It originates in the Canelo Hills and continues northwest about 50 miles (80 km) to an area just outside Tucson, where it becomes known as Pantano Wash. Pantano Wash continues through Tucson and eventually connects with the Rillito River.