Lake Geneva is the largest French-Swiss lake and lies on the border between Romandy in the southwest of Switzerland and the Auvergne-Rhône-Alpes region in eastern France. The southwestern tip of the lake belongs to the Swiss canton of Geneva, the north bank to the Swiss canton of Vaud and the south bank to the French department of Haute-Savoie. Also, the township of Valais has a small share of the eastern south bank. The lake is divided into Haut Lac, Grand Lac, and Petit Lac.
Lake Geneva is the second largest lake in Central Europe after Lake Balaton in Hungary. It is 372 m above sea level, is 580,03 km² and at the deepest point 310 m deep. It is also the deepest lake in France.