The shape of the course resembles the silhouette of a terrier sitting upright, leaning right, with the upper part of a northeastern corner "ear" the only zone in Switzerland, there reaching Saint-Ursanne.

Nearby, the river, dammed up by landslide debris, forms the 4-kilometre (2.5 mi) long, 200-metre (660 ft) wide, winding lake, (le) Lac des Brenets.

[2] The Doubs flows through the following Departments of France, Cantons of Switzerland, and cities: Tributaries include:[1] The river forms several lakes: The rate of flow of the Doubs is very seasonally variable.

The flooding or well-watered season can stretch from September to May, caused by heavy rains or by quick melting of snow from the Jura mountains.

You can help Wikipedia by expanding it.This article related to a river in Switzerland is a stub.