Lake Geneva Lake Geneva Lake Geneva ( or ' /, rarely ' ; ) is a lake on the north side of the Alps, shared between Switzerland and France. It is one of the largest lakes in Western Europe and the largest on the course of the Rhône. 59.53% () of it comes under the jurisdiction of Switzerland (cantons of Vaud, Geneva, and Valais), and 40.47% () under France (department of Haute-Savoie). Lake Geneva has been explored by four submarines: the "Auguste Piccard" and the "F.-A. Forel", both built by Jacques Piccard, and the two "Mir" submersibles. The first recorded name of
Inn (river) at the Reschen Pass, since the 16th century at the latest the origin has been seen uniformly in the area of the lakes at the Maloja Pass. There may be a connection between the name Inn and the name of the French river Ain. The source is located in the Swiss Alps, west of St. Moritz in the Engadine region, which is named after the river (Romansh "Engiadina"; Latin "vallis Eniatina"). Shortly after it leaves its source, the Inn flows through the largest lakes on its course, Lake Sils and Lake Silvaplana. It runs north-eastwards, entering Austria, and from Landeck