Geneva, Lake (French:Lac de Genève; also Lac Léman), a lake in central Europe shared by Switzerland and France. It lies on the Swiss Plateau between the Jura Mountains and the Alps, 1,220 feet (372 m) above sea level. The lake is crescent-shaped, about 45 miles (72 km) long, up to 8 miles (13 km) wide, and has an area of 224 square miles (580 km2). The maximum depth is 1,017 feet (310 m).

Lake Geneva is known for its deep blue and unusually clear water, which comes mainly from the high Swiss Alps. The Rhône is the chief river entering the lake. Along the shores are vineyard-covered hills, mountains, picturesque towns, and some of the finest resort cities in Europe. Best known are the Swiss cities of Geneva, Lausanne, and Montreux. The area around Montreux is often called the Vaud Riviera because of its magnificent setting and fashionable resorts.