river in France
For other uses, see Mayenne (disambiguation)
La Mayenne is a river in the northwest of France. Its source in the Orne, about 15 km west of Alençon. It joins the Sarthe and Loire River north of Angers to form the Maine.
It is 200 km long and its surface area is about 5 820 km². It has an average discharge of 50 m³/s.