The Embarras River, on the other hand, drains the south-central portion of the Champaign–Urbana metropolitan area, originating in southeastern Champaign and flowing through the experimental fields on the southern part of the campus of the University of Illinois. The is a tributary to the Wabash River and Ohio River systems. The northeast corner of Champaign, the central portion of the University campus, and the northern part of Urbana are drained by the Boneyard Creek, which flows into the Saline Ditch, a tributary of the Vermilion and Wabash rivers.