Sarthe Sarthe () is a department of the French region of Pays de la Loire, and the province of Maine, situated in the '' Grand-Ouest'' of the country. It is named after the river Sarthe, which flows from east of Le Mans to just north of Angers. It ha ...

Maine Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and ...

Loire The Loire (, also ; ; oc, Léger, ; la, Liger) is the longest river in France and the 171st longest in the world. With a length of , it drains , more than a fifth of France's land, while its average discharge is only half that of the Rhône ...

Orne Orne (; nrf, Ôrne or ) is a département in the northwest of France, named after the river Orne. It had a population of 279,942 in 2019.Lalacelle, between Pré-en-Pail and Alençon. The source is in the foothills of Mont des Avaloirs at an altitude of 961 feet (293m); from there the river runs from east to west until it reaches Sept-Forges, at which point it turns to the south. After being joined by the Oudon, the Mayenne forms a confluence with the

Sarthe Sarthe () is a department of the French region of Pays de la Loire, and the province of Maine, situated in the '' Grand-Ouest'' of the country. It is named after the river Sarthe, which flows from east of Le Mans to just north of Angers. It ha ...

north of

Angers Angers (, , ) is a city in western France, about southwest of Paris. It is the prefecture of the Maine-et-Loire department and was the capital of the province of Anjou until the French Revolution. The inhabitants of both the city and the pr ...

. The confluence of these two rivers is called the

Maine Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and ...

, which is the local pronunciation of Mayenne. The waters of the Maine then empty into the Loire south of Angers. Departments and towns along the river include: *

Orne Orne (; nrf, Ôrne or ) is a département in the northwest of France, named after the river Orne. It had a population of 279,942 in 2019.Mayenne Mayenne () is a landlocked department in northwest France named after the river Mayenne. Mayenne is part of the administrative region of Pays de la Loire and is surrounded by the departments of Manche, Orne, Sarthe, Maine-et-Loire, and Ill ...

:

Mayenne Mayenne () is a landlocked department in northwest France named after the river Mayenne. Mayenne is part of the administrative region of Pays de la Loire and is surrounded by the departments of Manche, Orne, Sarthe, Maine-et-Loire, and Ill ...

, Laval,

Château-Gontier Château-Gontier () is a former Communes of France, commune in the Mayenne Departments of France, department in north-western France. On 1 January 2019, it was merged into the new commune Château-Gontier-sur-Mayenne. Geography It is about sout ...

* Maine-et-Loire: Chenillé-Changé, Chambellay, Montreuil-sur-Maine, Le Lion-d'Angers, Grez-Neuville, Pruillé, La Membrolle-sur-Longuenée, Feneu, Montreuil-Juigné, Cantenay-Epinard,

Angers Angers (, , ) is a city in western France, about southwest of Paris. It is the prefecture of the Maine-et-Loire department and was the capital of the province of Anjou until the French Revolution. The inhabitants of both the city and the pr ...

. It is featured prominently in the video game ''

Call of Duty 3 ''Call of Duty 3'' is a 2006 first-person shooter video game developed by Treyarch and published by Activision. It is the third major installment in the ''Call of Duty'' series. It was released for PlayStation 3, Wii, Xbox 360, PlayStation 2 an ...

''.

Navigation

The Mayenne was navigable in its natural state up to Château-Gontier. Works were undertaken in the 16th century to make the river navigable upstream from here to Laval; royal decrees by François I in 1536 and 1537 authorised the necessary works, including flash locks. Economic expansion in the 17th and 18th centuries justified engineering with locks and weirs not only to Laval but also upstream to Mayenne. This extension, with 20 locks and weirs, was built at the same time as about 40 flash locks were replaced by 25 weirs and locks, some in short lock-cuts, between 1853 et 1878. The river was used by barges carrying up to 130 tonnes, and the principal traffics were construction materials (wood and stone), coal from the mines of L'Huisserie, grain, fruit and vegetables. At this time it was planned to build a watershed canal north from Mayenne to the tidal river Orne at Caen, but the project was abandoned as railways became the preferred carrier of freight. The navigation was abandoned after World War II, but restored from the 1970s as a cruising waterway. The upstream section was completed in the early 1990s.

Flow

In spite of abundant precipitation, the flow of the Mayenne is irregular because of the impermeability of the

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates ...

,

granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies under ...

, and

schist Schist ( ) is a medium-grained metamorphic rock showing pronounced schistosity. This means that the rock is composed of mineral grains easily seen with a low-power hand lens, oriented in such a way that the rock is easily split into thin flakes ...

which form its drainage basin. Thus, for an average flow of before the Mayenne's confluence with the Oudon, the yearly minimum flow can range from very low ( at Laval) to very high (flash floods with flows of at Laval and more than at Chambellay). The flow of the Mayenne has been observed for a period of 44 years (1965-2008) at Chambellay, situated upstream of the confluence with the Sarthe, and just upstream from where the Oudon joins the Mayenne. At this location, the drainage basin of the river is out of a total of , which is less than three-quarters of the entire drainage basin (71.5%), and also does not include the flow of the Oudon, the Mayenne's principal tributary. The average yearly flow at Chambellay is , which corresponds to over if the rest of the drainage basin were included.

Tributaries

The main

tributaries A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainag ...

of the Mayenne are, from source to mouth: * Varenne * Colmont *

Ernée Ernée () is a commune in the Mayenne department in north-western France. It is named after the river Ernée, which runs through the town and is situated about halfway between the towns of Laval and Fougères. Ernée is home to a purpose-bui ...

*

Jouanne The Jouanne () is a long river in western France located in the department of Mayenne, region of Pays de la Loire. It is a tributary of the river Mayenne on the left side, and so is a sub-tributary of the Loire by Mayenne and Maine. History T ...

* Vicoin * Oudon

References

External sources

River Mayenne (River Maine) and River Oudon
with maps and details of places, ports and moorings, by the author of ''Inland Waterways of France'', Imray
Navigation details for 80 French rivers and canals
(French waterways website section) {{Authority control Rivers of France Rivers of Mayenne Rivers of Maine-et-Loire Rivers of Orne Rivers of Normandy Mayenne