Loir is a river in western France. It is a tributary of the Sarthe River. Its source is in the Eure-et-Loirdépartement, north of Illiers-Combray. It joins the river Sarthe north of the city Angers.
The name "Loire" comes from Latin Liger, which is itself a transcription of the native Gaulish (Celtic) name of the river.
Unlike most other rivers in western Europe, there are very few dams or locks creating obstacles to its natural flow (the Villerest dam, built in 1985 a few kilometers south of Roanne, has played a key-role in preventing recent flooding).
As a result, the Loire is a very popular river for boating excusions, flowing through a pastoral countryside, past limestone cliffs and storybook castles.