The Seiche is a long

river A river is a natural flowing watercourse, usually freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the ...

in western

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...

located in the departments of

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 Ille-e ...

(

Pays de la Loire Pays de la Loire (; ; br, Broioù al Liger) is one of the 18 regions of France, in the west of the mainland. It was created in the 1950s to serve as a zone of influence for its capital, Nantes, one of a handful of "balancing metropolises" (). ...

) and

Ille-et-Vilaine Ille-et-Vilaine (; br, Il-ha-Gwilen) is a department of France, located in the region of Brittany in the northwest of the country. It is named after the two rivers of the Ille and the Vilaine. It had a population of 1,079,498 in 2019.

(

Brittany Brittany (; french: link=no, Bretagne ; br, Breizh, or ; Gallo: ''Bertaèyn'' ) is a peninsula, historical country and cultural area in the west of modern France, covering the western part of what was known as Armorica during the period o ...

). It is a left tributary of the river

Vilaine The Vilaine (; br, Gwilen) is a river in Brittany, in the west of France. The river's source is in the Mayenne ''département'' (53), and it flows out into the Atlantic Ocean at Pénestin in the Morbihan ''département'' (56). It is 218 km ...

. It flows into the Vilaine near

Bruz Bruz ( or ) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France. Geography Bruz is located near the center of the Ille-et-Vilaine department, 14 km from Rennes. It is near the confluence of the rivers Vilai ...

, south of

Rennes Rennes (; br, Roazhon ; Gallo: ''Resnn''; ) is a city in the east of Brittany in northwestern France at the confluence of the Ille and the Vilaine. Rennes is the prefecture of the region of Brittany, as well as the Ille-et-Vilaine departm ...

References

Rivers of France Rivers of Manche Rivers of Mayenne Rivers of Orne Rivers of Normandy Rivers of Pays de la Loire {{France-river-stub