French Lac Léman , or Lac de Genève , German Genfersee largest Alpine lake in Europe .... mile squar

About 134 square miles (347 square km) of the lake's area are Swiss, and 90 square miles (234 square km) are French. Lying at an elevation of 1,220 feet (372 m), the lake is 45 miles (72 km) long, with a maximum width of 8.5 miles (13.5 km) and an average width of 5 miles (8 km). mile squar