Semnon

Semnon
Origin	Congrier; Lua error in package.lua at line 80: module 'strict' not found.
Mouth	Vilaine; Lua error in package.lua at line 80: module 'strict' not found.
Progression	Vilaine→ Atlantic Ocean
Basin countries	France
Length	73.3 km (45.5 mi)
Source elevation	90 m (300 ft)
Mouth elevation	7 m (23 ft)
Avg. discharge	2.8 m3/s (99 cu ft/s) at mouth
Basin area	400 km2 (150 sq mi)

The Semnon (French: le Semnon) is a 73.3 km (45.5 mi) long river in the Mayenne, Maine-et-Loire, Ille-et-Vilaine and Loire-Atlantique départements, western France. Its source is at Congrier. It flows generally west-northwest. It is a left tributary of the Vilaine into which it flows between Pléchâtel and Bourg-des-Comptes.

Départements and communes along its course

This list is ordered from source to mouth:

This article is based on the equivalent article from the French Wikipedia, consulted on 1 May 2009.

This Loire-Atlantique geographical article is a stub. You can help Wikipedia by expanding it.

This Ille-et-Vilaine geographical article is a stub. You can help Wikipedia by expanding it.

This Mayenne geographical article is a stub. You can help Wikipedia by expanding it.

This Maine-et-Loire geographical article is a stub. You can help Wikipedia by expanding it.

This article related to a river in France is a stub. You can help Wikipedia by expanding it.

Semnon
Origin	Congrier Lua error in package.lua at line 80: module 'strict' not found.
Mouth	Vilaine Lua error in package.lua at line 80: module 'strict' not found.
Progression	Vilaine→ Atlantic Ocean
Basin countries	France
Length	73.3 km (45.5 mi)
Source elevation	90 m (300 ft)
Mouth elevation	7 m (23 ft)
Avg. discharge	2.8 m³/s (99 cu ft/s) at mouth
Basin area	400 km² (150 sq mi)