Doller River
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The Doller is a river in Alsace (Haut-Rhin), in north-eastern France. It is a left tributary of the Ill (a tributary of the Rhine), in Mulhouse.
The source of the Doller is in the Vosges Mountains, east of the Ballon d'Alsace, at 940 m elevation. It flows generally east, through the towns Sewen, Dolleren, Masevaux, Sentheim, Reiningue, before it enters the Ill in Mulhouse.
The word dollar may derive from doller.