Doubs (river)
The river course of the Doubs (highlighted)
The Doubs between Laissey and Deluz, shortly before Besançon.
The Doubs [ you ] ( German Dub ) is a French-Swiss river in eastern France and western Switzerland.
Source du Doubs
The Source du Doubs (Eng. source of the Doubs) is a powerful karst spring from the karstified rocks of the Jura. It is Mouthe, at an altitude of 937 m at the foot of wooded, up to 1419 m high Mont Risoux mountain range, which runs on the Swiss border. The Doubs rises there a cave in the rock in a small, about five feet deep Quelltopf is. He pours an average of 1740 liters per second and the output is a complex cave system with multiple siphons. The bed can vary greatly. In the cliff above the Source du Doubs you can see the layers of rock. Below the source of the river tumbles down a small waterfall. About two kilometers below the Source du Doubs flows of about 9 km long Cébriot in the Doubs.
River Description
The Doubs turns to its source initially northeast through Pontarlier, flows in its course the border Lac de Moron towards Delémont, taking the border with Switzerland maps Les Brenets, the Saut du Doubs falls down and for a short distance of about. 29 km is quite a Swiss river. This river basin is called Clos du Doubs. After Saint- Ursanne the river changes direction and leaves the Swiss terrain in Ocourt and La Motte on the Swiss side and Brémoncourt on the French side.
The rate of flow of the Doubs is not stable, in some places it flows quietly with only 5 km / h on other he reached speeds of up to 12 km / h The width of the river is also very different 6-30 meters ( average) and up to 200 meters wide in some places. The area is difficult to access largely deserted and because of the surrounding forests and Jura mountains.
From Saint- Ursanne west of Delémont the Doubs his sense of Saône final changes and then from Montbéliard to Besançon in a southwesterly direction and strive towards Dole past, in which he in Verdun -sur -le- Doubs about 16 km north-east of Chalon -sur -Saône flows.
From Goumois (next to the French resort there on the Swiss side a same community), the hamlet Clairbief on the French border or from Soubey offered for the route in the direction of Saint- Ursanne kayaks. The path 2 kilometers to Soubey can be very dangerous depending on water levels for the outstanding stones and the strong current in the narrow valley. At a length of about 2 km is the difficulty according to whitewater difficulty scale III.
The Doubs is 453 km long, with source and mouth are just 90 km apart. It drains an area of 7710 km ². It has features of a karst river such as a very irregular water supply ( between 21 m³ / s at low tide and 1430 m³ / s during the flood in February 1990). Parts of the water seep in Pontarlier in the Doubs and come in the karst source of the Loue in Ouhans reappear. This phenomenon was discovered when a 1901 Absinthe Distillery in Pontarlier caught fire and large quantities of absinthe poured into the river. A few days later the waters of the Loue smelled strongly of anise. Subsequent staining experiments confirmed this observation.
In the Doubs rare species Rhone- nerd occurs ( Zingel asper ).
Shipping
Between Dole Montbéliard, Doubs is partially channeled and forms a portion of the Canal du Rhone au Rhin. But even in his mouth portion between Navilly and Verdun -sur -le- Doubs river is navigable by ships.
Gallery
The Saut du Doubs
The Doubs west of Soubey
Smooth running of the Doubs at Soubey
View of Restaurant Tariche on the Doubs southwest of Saint- Ursanne
View of Le Doubs from the rocks at Muriaux
Along the Doubs River Saône