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
Geography of the Alps passes to the south of the Jura range before reaching Lake Geneva. An area of flat ground reaches from there to Lake Neuchâtel, continuing the border, with the Jura to the north-west and the Alps to the south east. From Lake Neuchâtel to its confluence with the Rhine, the Aare forms the border. The Black Forest is separated from the Alps by the Rhine and Lake Constance, but exact delimitation is difficult in southern Germany, where the land gently slopes up to meet the mountains (known in German as the "Schwäbisch-Bayerisches Alpenvorland", the "Swabian-Bavarian pre-Alps"). In Austria, the Danube runs