 The two most important rivers of the region are the Main and its primary tributary, the Regnitz.The tributaries of these two rivers in Franconia are the Tauber, Pegnitz, Rednitz and Franconian Saale.Other major rivers in the region are the Jagst and Kocher in Hohenlohe-Franconia, which empty into the Neckar north of Heilbronn in Baden-Württemberg, the Altmühl and the Wörnitz in Middle Franconia, both tributaries of the Danube, and the upper and middle reaches of the Werra, the right-hand headstream of the Weser.