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
Amadeus II of Geneva Amadeus II of Geneva Amadeus II (died 22 May 1308) was the Count of Geneva, which included the Genevois, but not the city of Geneva, from 1280. He was the second son of Count Rudolf and succeeded his heirless brother Aymon II. In June 1282 at Versoix, Amadeus and Béatrice “la Grande Dauphine”, the dowager Countess of Albon and regent for her son John I, came to an agreement whereby all the places that Amadeus' father and grandfather, William II, had been forced to cede to Peter “the Little Charlemagne” in 1250 and 1260—the so-called "gagerie"—would be returned to Geneva.