Romanche
The Romanche river in Écrins National Park
Location
Country	France
Physical characteristics
Source
• location	Dauphiné Alps
• coordinates	44°58′26″N 6°21′58″E / 44.97389°N 6.36611°E / 44.97389; 6.36611 (source Romanche)
• elevation	2,140 m (7,020 ft)
Mouth
• location	Drac
• coordinates	45°5′23″N 5°43′33″E / 45.08972°N 5.72583°E / 45.08972; 5.72583
• elevation	260 m (850 ft)
Length	78.3 km (48.7 mi)
Basin size	1,221 km2 (471 sq mi)
Basin features
Progression	Drac→ Isère→ Rhône→ Mediterranean Sea

The Romanche (French pronunciation: [ʁɔmɑ̃ʃ] ^ⓘ) is a 78.3-kilometre (48.7 mi) mountain river in southeastern France. It is a right tributary of the Drac, itself a tributary of the Isère.^[1] Its drainage basin is 1,221 km² (471 sq mi).^[2]

The Romanche begins in the northern part of the Massif des Écrins, Dauphiné Alps. It flows into the Drac in Champ-sur-Drac, south of Grenoble. The road from Grenoble to Briançon over the Col du Lautaret runs through its valley, which holds several mountain and ski resorts, including Alpe d'Huez, La Grave and Les Deux Alpes.

The Romanche flows through the Hautes-Alpes department in La Grave and the Isère in Mont-de-Lans, Le Bourg-d'Oisans, Livet-et-Gavet and Vizille.