Lake Geneva or Lake Léman (
French Lac Léman, le Léman, or Lac de Genève) is the second largest freshwater
lake in
Central Europe (after
Lake Balaton). 60% of it comes under the jurisdiction of
Switzerland (cantons of
Vaud,
Geneva, and
Valais), and 40% under
France (
Haute-Savoie).The crescent-shaped lake, formed by a withdrawing glacier, narrows around
Yvoire on the southern shore, the lake can thus be divided into the "Grand Lac" (Large Lake) to the east and the "Petit Lac" (Small Lake) to the west.It lies on the course of the
Rhône River. The river has its source at the
Rhone Glacier near the
Grimsel Pass to the east of the lake and flows down through the Canton of
Valais, entering the lake between
Villeneuve and
St. Gingolph, before flowing slowly towards its egress at
Geneva. Other tributaries are La Dranse, L'Aubonne, La Morges, Venoge, and Veveyse.
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