Diemel

The Diemel is a river in Hesse and North Rhine-Westphalia, Germany. It is a left tributary of the Weser.
Route.
The source of the Diemel is near Willingen, in Sauerland. The Diemel flows generally northeast through the towns Marsberg, Warburg, and Trendelburg. It flows into the Weser in Bad Karlshafen.