Alagnon

The Alagnon is a French river that starts in the Massif Central within the Regional Natural Park of the Volcanoes of Auvergne (French: Parc Naturel Régional des Volcans d'Auvergne) and that flows through the Auvergne-Rhône-Alpes region. It is a left tributary of the Allier.

Alagnon
Length86.7 km (53.9 mi)

Geography

The Alagnon river has a length of 85.9 km (53.4 mi) and a drainage basin with an area of 1,042 km2 (402 sq mi).[1]

Its average yearly discharge (volume of water which passes through a section of the river per unit of time) is 11.90 m3/s (420 cu ft/s) at Lempdes-sur-Allagnon in the Haute-Loire department.[2]

Average monthly discharge (m3/s) at Lempdes-sur-Allagnon (50 years)[2]

Course

The Alagnon river starts in the Mounts of Cantal (Massif Central), near the Puy Bataillouse mountain, commune of Laveissière, at an altitude of about 1,590 m (5,217 ft), in the Cantal department.[3] First, it flows to the east, near the Super Lioran ski resort, and gets into a gorge and, then, into a valley near Murat. The river flows in general to the northeast and gets into deep gorges in Lempdes-sur-Allagnon.

The Alagnon river flows through the Auvergne-Rhône-Alpes region, 3 departments and 23 communes. Two communes are named after the river: La Chapelle-d'Alagnon and Lempdes-sur-Allagnon. It flows through the following communes, among others:[1]

Finally, it flows into the Allier river in the town of Auzat-la-Combelle, in the place known as Le Saut du Loup, in the Puy-de-Dôme department.[4]

Main tributaries

The main tributaries, over 20 km long, of the Cère river are:[1]

Left tributaries:

  • Allanche - 30.5 km
  • Sianne - 33.1 km
  • Bave - 22 km
  • Auze - 17.5

Right tributaries:

  • Arcueil - 37.8 km
  • Alagnonnette - 20 km
  • Violette - 15.4 km

Gallery

Related pages

References

  1. 1.0 1.1 1.2 "L'Alagnon (K25-0300)" (in français). SANDRE - Portail national d'accès aux référentiels sur l'eau. Archived from the original on 28 May 2014. Retrieved 25 January 2017.
  2. 2.0 2.1 "L'Alagnon à Lempdes". Banque Hydro (in français). Ministère de l'Ecologie, du Développement Durable et de l'Energie. Archived from the original on 3 March 2016. Retrieved 25 January 2017.
  3. "Source de l'Alagnon" (in français). Géoportail. Retrieved 25 January 2017.
  4. "Embouchure de l'Alagnon" (in français). Géoportail. Retrieved 25 January 2017.