Buthier
Saumont dam, near Aosta
Location
Country	Italy
Physical characteristics
Source
• location	Grandes Murailles glacier
• elevation	3,000 m (9,800 ft)
Mouth
• location	Dora Baltea in Aosta
• coordinates	45°43′56″N 7°20′25″E / 45.7321°N 7.3403°E / 45.7321; 7.3403
Length	40 km (25 mi)
Basin features
Progression	Dora Baltea→ Po→ Adriatic Sea

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 Place-Moulin Lake 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.

• Pont de Pierre, a Roman bridge from the time of Augustus (r. 30 BC –14 AD)

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