River Sarthe
The Sarthe (French pronunciation: [saʁt] ) is a 313.9-kilometre-long (195.0 mi) river in western France. Together with the river Mayenne it forms the river Maine, which is a tributary to the river Loire.
The navigable river Sarthe from Le Mans to the confluence with the Mayenne north of Angers 
The Sarthe at Le Mans 
Its source is in the Orne department, near Moulins-la-Marche. It flows generally southwest, through the following departments and towns:
- Orne: Le Mêle-sur-Sarthe, Alençon
- Sarthe: Fresnay-sur-Sarthe, Beaumont-sur-Sarthe, Le Mans, Sablé-sur-Sarthe
- Maine-et-Loire: Châteauneuf-sur-Sarthe, Tiercé, Angers
Its main tributaries are the Loir and the Huisne from the left, and the Vaige, the Erve and the Vègre from the right.
Navigation
The Sarthe has 20 weirs and locks. The channel is well marked and navigation is straightforward, except for the risk of shoals in certain sections.
References
External links
Wikimedia Commons has media related to Sarthe River.
- River Sarthe with further maps and expanded details (by the author of 'Inland Waterways of France')
- Navigation details for 80 French rivers and canals (French waterways website section)