The source is Mouthe and the mouth is Saône.
Navigation on the Doubs starts at Verdun-sur-le-Doubs and ends at Navilly.
The Doubs is 453 kilometres long (281.48 miles) with a total of 13 kilometres of navigable waterway.
The highest point on the Doubs is 946 metres (3103′ 8″ ft) above sea level and the lowest point is at 175 metres (574′ 2″ ft) above sea level.
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More details about The River Saône region