The Udon () is a river in northwestern France, crossing the department of the Orne. It is 28.24 km long. Its source is in Chahains, and it flows into the river Orne on the border of the communes of Écouché-les-Vallées and Sevrai.
The river flows through the area known as the Plaine d'Argentan.
Tributaries
The three biggest tributaries for the Udon are:
Ruisseau du Moulin de Besnard (13 km long) Le Couillard (11 km long) La Ranette (7 km long)
Communes
The Udon passes through the following Communes:
Chahains Carrouges Sainte-Marguerite-de-Carrouges Sainte-Marie-la-Robert Vieux-Pont Saint-Martin-des-Landes Joué-du-Plain Saint-Martin-l'Aiguillon Sevrai Écouché-les-Vallées
References