Loir

The **Loir** is a river in central France. It is a left tributary of the Sarthe. It flows through two regions of France: Centre-Val de Loire and Pays de la Loire

The Eure-et-Loir and Loir-et-Cher departments are named after this river.

## Geography
The Loir is  long. Its drainage basin covers .

Its average yearly discharge (volume of water which passes through a section of the river per unit of time) is  at Durtal, Maine-et-Loire (1961 - 2017).

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**Average monthly discharge (m3/s) at Durtal**

### Course
The Loir starts in the former province of *Perche*, in the *commune* of Champrond-en-Gâtine, Eure-et-Loir department, Centre-Val de Loire region. It starts at an altitude of about .

The Loir flows, in general, to the southwest. It goes through the following regions, departments and *communes*: in Briollay, Maine-et-Loire department, at  of altitude.

## Main tributaries
The main tributaries of the Loir are:

**Left tributaries**:
* Conie - 32.4&nbsp;km
* Aigre - 30.8&nbsp;km
* Houzée - 20.8&nbsp;km
* Dême - 32.5&nbsp;km
* Fare - 36.9&nbsp;km
* Maulne - 29.3&nbsp;km
* Marconne - 20.9&nbsp;km

**Right tributaries**:
* Thironne - 26&nbsp;km
* Foussarde - 30.5&nbsp;km
* Ozanne - 44&nbsp;km
* Yerre - 48.7&nbsp;km
* Egvonne - 24.2&nbsp;km
* Braye - 75.1&nbsp;km
* Veuve - 26.2&nbsp;km
* Aune - 29.8&nbsp;km
* Argance - 19.7&nbsp;km

## Gallery

File:Le Loir à La Flèche.JPG|The Loir in La Flèche.
File:VendomeLoir.jpg|The Loir in Vendôme.
File:Durtal - Le Loir (2011).jpg|The Loir in Durtal.
File:Villevêque (49).jpg|The Loir in Villevêque

## Related pages
* List of rivers of France

## Notes
## References