Viaur

The Viaur is a 168 km river in south-western France. It is a left tributary of the Aveyron. Its source is in the southern Massif Central, north of Millau. It flows generally west through the following departments and towns:


 * Aveyron: Pont-de-Salars
 * Tarn: Pampelonne
 * Tarn-et-Garonne: Laguépie

The Viaur flows into the Aveyron in Laguépie.

Its main tributary is the Céor.