Eyrieux (river)

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L'Eyrieux du pont de Saint Sauveur de Montagut 2007 05 19.jpg
Country France
Basin features
Main source Massif Central
110 m (360 ft)
River mouth Rhône
44°48′25″N 4°48′3″E / 44.80694°N 4.80083°E / 44.80694; 4.80083 (Rhône-Eyrieux)Coordinates: 44°48′25″N 4°48′3″E / 44.80694°N 4.80083°E / 44.80694; 4.80083 (Rhône-Eyrieux)
Progression RhôneMediterranean Sea
Physical characteristics
Length 83 km (52 mi)

The Eyrieux River is a tributary of the Rhône River in Europe. The Eyrieux runs for 83 kilometres (52 mi). It begins in the Massif Central and joins the Rhône in the Rhône Valley just downstream of Valence.

The Eyrieux has at least three distinct landscapes. Above Le Cheylard, the plateau is marked by the sugarloaf cones of old volcanoes, and the land is used mostly for raising cattle and sheep. In its middle section, down to Saint-Sauveur-de-Montagut and Les Ollières-sur-Eyrieux, the river is torrential and prone to flash floods and extreme variation. Formerly used for silk mills, it is now used for micro-hydroelectric production, and is a popular spot for canoeing. The river never dries up in summer, as the many dams and barrages maintain a steady flow. The lower section to the Rhône, at Beauchastel and La Voulte-sur-Rhône, opens into the valley and allows intensive farming, especially peach orchards which are best viewed when the trees bloom in the spring.