 the doubs () is a  long river in eastern france and western switzerland, left tributary of the saÃ´ne. its source is near mouthe in the western jura mountains. first it flows northeast, more or less along the french-swiss border (forming the border for approx. 40&nbsp;km). near montbÃ©liard it turns southwest, until it flows into the river saÃ´ne in verdun-sur-le-doubs, approx. 20&nbsp;km northeast of chalon-sur-saÃ´ne. its entire course resembles an inverted letter u, with the northeastern corner the only point at which the doubs flows into switzerland as far as saint-ursanne. thumb|left|250px|course of the doubs the doubs flows through the following departments of france, cantons of switzerland, and cities: * doubs (f): pontarlier * neuchÃ¢tel (ch) * jura (ch): saint-ursanne * doubs (f): montbÃ©liard, besanÃ§on * jura (f): dole * saÃ´ne-et-loire (f): verdun-sur-le-doubs tributaries include: * loue * dessoubre the river forms several lakes: *lac des brenets (elevation 750 m) *lac de moron (elevation 716 m) *lac de biaufond (elevation 610 m) ==see also== *january 1910 doubs river flood ==references==   *http://www.geoportail.fr *the doubs at the sandre database
International_rivers_of_Europe RhA'ne_basin Rivers_of_France Rivers_of_Switzerland