The Zorn is a river in north-eastern France. It is a right tributary of the Moder river.
Geography
The Zorn river has a length of , and a drainage basin with an area of .
Its average yearly discharge (volume of water which passes through a section of the river per unit of time) is at Hœrdt (Bas-Rhin).
Course
The Zorn starts in the Vosges mountains in the commune of Walscheid, (Moselle department) as the Yellow Zorn (, ) at an altitude of about . The Yellow Zorn becomes the Zorn after its confluence with the right-hand tributary, the White Zorn (, ) at an altitude of about .
From here, the Zorn flows to the north and then turns to the east; in the final part, the river flows to the northeast.
The Zorn river flows within the Grand Est region, the Moselle and Bas-Rhin departments and 91communes.
Finally, the Zorn river flows into the Moder river in Rohrwiller, (Bas-Rhin department).
Main tributaries
The main tributaries of the Zorn river areː
Left tributary
Zinsel du Sud - 30.9 km; Right tributary Mossel - 21.2 km;