The Federbach is a roughly 41-kilometre-long stream in the German state of Baden-Württemberg. It flows through the counties of Karlsruhe and Rastatt and discharges today near the Karlsruhe district of Maxau into the Alb.
Its source region lies in the municipality of Malsch on the edge of the Northern Black Forest. Unlike the other streams on the right-hand side of the Upper Rhine Plain the Federbach flows from Malsch initially southwest, then swings west near Muggensturm and accompanies the Rhine northwards for a long way after entering the Rhine lowlands.
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