Geneva 15.7%. Of the agricultural land, 0.3% is used for growing crops. Of the water in the municipality, 0.2% is composed of lakes and 2.9% is rivers and streams. The altitude of Geneva is , and corresponds to the altitude of the largest of the Pierres du Niton, two large rocks emerging from the lake which date from the last ice age. This rock was chosen by General Guillaume Henri Dufour as the reference point for surveying in Switzerland. The second main river of Geneva is the Arve, which flows into the Rhône just west of the city centre. Mont Blanc
Geneva Lake Geneva Lake Geneva Lake is a body of freshwater in Walworth County in southeastern Wisconsin. On its shores are the city of Lake Geneva, and the villages of Fontana-on-Geneva-Lake, and Williams Bay. The lake covers an area of approximately , has a maximum length of , mean depth of and a maximum depth of . Geologists believe that it is a filled-in kettle formed from a receding glacier. The lake and the community of Lake Geneva were named for the town of Geneva, New York, located on Seneca Lake, which government surveyor John Brink thought it resembled. To avoid confusion