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 Country Day School course for the school. Bangs was familiar with Holabird & Roche through Illinois Bell, so they were tasked with designing the building. The University of Chicago School of Education was consulted to design the school's strategy, help in design, and choose a principal. One of the students in the school was the son of a trustee for the university. The school grounds included a soccer and football field, a basketball court, a baseball diamond, and a playground. The Geneva Country Day School attracted teachers proficient in many areas including art and music, allowing the school to focus on developing sportsmanship,