The Westerbach () is a right tributary of the Kahl in the northern Spessart in Lower Franconia, Bavaria, Germany.
It is long (7.2 km including Querbach) and begins at the confluence of Querbach and Huckelheimer Bach in Westerngrund. The Querbach rises in the Arzborn, a small opening in the mountainside on the , northeast of , near the border between Hesse and Bavaria. In Schöllkrippen the Westerbach empties in the Kahl.
Together with the Sommerkahl, Reichenbach and Geiselbach, the Westerbach is one of the largest tributaries of the Kahl.
Tributaries Querbach (left headstream) Huckelheimer Bach (right headstream) (right) Schulzengrundbach (left) (right) Herzbach (left) Schneppenbach (right) (right)
See also List of rivers of Bavaria
References