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Buthier a aosta.jpg
Saumont dam, near Aosta
Origin Grandes Murailles glacier
Mouth Dora Baltea
Basin countries Italy
Length 40 km (25 mi)
Source elevation 3,000 m (9,800 ft)

The Buthier is a mountain torrent in north-west Italy. A left bank tributary of the Dora Baltea, its entire course lies within the Valpelline, a valley in the region of Aosta Valley.


One branch of the river is formed by the Tsa de Tsan glacier at an elevation of about 2,700 metres (8,900 ft); a second by the Grandes Murailles glacier at about 3,000 metres (9,800 ft). The river is then dammed to form the Lago di Place-Moulin reservoir, after which it passes through the communes of Bionaz, Oyace, Valpelline, Roisan and finally Aosta where it joins the Dora Baltea.


The principal tributaries from the left are:

  • Rû Verdonaz
  • Vessonaz;

and from the right:

  • Ollomont
  • Artanavaz.



This article began as a translation from its counterpart in the Italian Wikipedia, specifically from this version

Coordinates: 45°43′56″N 7°20′25″E / 45.7321°N 7.3403°E / 45.7321; 7.3403