 A tributary of the Snake is the Bruneau River, which flows north from Nevada through the eastern section of the county.The Owyhee River starts in the southwestern part of the county and flows westward into Oregon; it eventually enters the Snake at the state border, south of Nyssa.As of the census of 2000, there were 10,644 people, 3,710 households, and 2,756 families living in the county.