The  Kocher  is a 168 km (104 mi)-long right tributary of the Neckar in the north-eastern part of Baden-Württemberg, Germany. The name "Kocher" originates from its Celtic name "cochan" and probably means winding, meandering river. The Kocher rises in the eastern foothills of the Swabian Alb from two karst springs, the Schwarzer (black) Kocher and the Weißer (white) Kocher. The Schwarzer Kocher drains an area of approximately 1,800 km² (690 sq mi) mostly covered by forest. Its source discharge varies between l/s and 4,000 l/s with an average of 680 l/s.