Gardon

The Gardon or Gard is a river in southeastern France, in the Lozère and Gard departments in the Occitanie region. It is a right tributary of the Rhône river.
The Gard department is named after this river.
Geography.
The Gardon river has a length of and a drainage basin with an area of .
Its average yearly discharge (volume of water which passes through a section of the river per unit of time) is at Sanilhac-Sagriès in the Gard department.
Average monthly discharge (m3/s) at Sanilhac-Sagriès
Course.
The Gardon (known here as "Gardon d'Anduze") starts in the Cévennes, southeastern Massif Central, in the "commune" of Saint-Martin-de-Lansuscle, Lozère department near "Prat Reboubalès", at an altitude of about .
The "Gardon d'Anduze" joins the Gardon d'Alès between the "communes" Cassagnoles and Vézénobres, at an altitude of about ; from here, the river is usually known simply as Gard.
The Gardon flows to the southeast, in general, and passes through the Lozère and Gard departments, in the Occitanie region, and a total of 37 "communes", most of them in the Gard department.
Finally, it flows, as a right tributary into the Rhône river near Comps at of altitude.
Main tributaries.
The main tributaries, with a length greater than 20 km, of the Gardon are: