What is Mayenne (river)?
''For other uses, see'' [[Mayenne (disambiguation)]] [[File:Rivière la Mayenne.jpg|thumb|The river ''la Mayenne'']] '''La Mayenne''' is a river in the northwest of [[France]]. Its source in the [[Orne]], about 15&nbsp;km west of [[Alençon]]. It joins the [[Sarthe (river)|Sarthe]] and [[Loire River]] north of [[Angers]] to form the [[Maine]]. It is 200&nbsp;km long and its [[surface area]] is about 5 820&nbsp;km². It has an average discharge of 50 m³/s. {{France-geo-stub}} [[Category:Rivers of Normandy]] [[Category:Rivers of Pays de la Loire]]