Arve

The Arve is a river in France (Haute-Savoie département) and Switzerland (canton of Geneva). It is a 108 km (67 mi) long left tributary of the Rhône, with 9 km in Switzerland. It has a catchment area of 1,976 km2 (763 sq mi), 80 km2 of which is in Switzerland. In Geneva, the average discharge is 79 m3/s (2,800 cu ft/s).

Rising near the Swiss border on the northern side of the Mont Blanc massif in the Alps, it receives water from the many glaciers of the Chamonix valley (primarily the Mer de Glace) before flowing north-west into the Rhône on the west side of Geneva, where its much higher level of silt creates a stark contrast between the two rivers.

Chamonix, Sallanches, Ox, Cluses, Bonneville, Annemasse, and Geneva are all served by the Arve. From source to mouth, tributaries include: Arveyron, Diosaz, Bon-Nant, Sallanche, Giffre, Borne, Menoge, Foron, Seymaz, and Aire.

Length: 108 km (67 mi- shared with Arve)