Oudon (river)

The Oudon is a river in western France, a tributary of the Mayenne. It flows through the Pays de la Loire region, specifically the departments of Maine-et-Loire and Mayenne.

The river's source is near La Gravelle in the Mayenne department. It flows generally southwest, passing through towns such as Cossé-le-Vivien, Châtelais, and Segré. It joins the Mayenne river at Le Lion-d'Angers in Maine-et-Loire.

The Oudon is approximately 83 kilometers (52 miles) long. Its drainage basin covers an area of approximately 670 square kilometers (260 sq mi).

The river is used for various purposes, including agriculture and recreation. The valley of the Oudon is characterized by its rural landscape, dotted with small villages and agricultural land. The river's water quality and ecological health are subject to monitoring and management efforts.