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
The Geneva School benefits of this proven historical approach in the context of modern, Reformed Christianity. The Geneva School athletic teams are known as the Knights. Dan Harger has served as athletic director since 1999. The Knights are full members of FHSAA and compete at the 2A level in most sports. The Geneva School teams have won district championships in nearly all sports. Numerous individual district and regional championships have been achieved as well as many appearances at state level competition. In 2011, a Geneva girls' cross country runner was the state runner-up. In 2013, the boys' tennis line one doubles team finished