The Kocher is a 169 km -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. Its total drainage area is 1,960 km². The Kocher rises in the eastern foothills of the Swabian Alb from two karst springs, the S…The Kocher is a 169 km -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. Its total drainage area is 1,960 km². The Kocher rises in the eastern foothills of the Swabian Alb from two karst springs, the Schwarzer Kocher and the Weißer Kocher, that join in Unterkochen near Aalen. The Schwarzer Kocher is approximately 8 km long. Its source discharge varies between 50 L/s and 4,000 L/s with an average of 680 L/s. The 3.3 km long Weißer Kocher has an average discharge of 400 L/s.