Jet d'eau geneva

The Jet d'Eau is one of Geneva's most iconic landmarks, shooting water 140 meters high into Lake Geneva.

About this subject

The Jet d'Eau (water jet in French) is a massive fountain located in Lake Geneva, Switzerland. Originally built in 1886 as a safety valve to relieve pressure from a hydraulic network, it was moved to its current location in the lake near the Jardin Anglais in 1891. Every second, two electric pumps of 500 kW propel 500 liters of water at 200 km/h, forming a jet that reaches 140 meters in height. During the day, the water reflects sunlight, creating rainbows when conditions are favorable. At night, the jet is illuminated by floodlights, becoming a nighttime landmark visible across the city. The Jet d'Eau is a symbol of Geneva and attracts thousands of tourists annually. Although the provided category is 'biology', the Jet d'Eau is an engineering and urban landscaping phenomenon, not a natural one. It represents the human ability to transform functional infrastructure into civic art. Interestingly, the jet can be turned off in high winds or sub-freezing temperatures to prevent accidents. Maintenance is carried out periodically, including divers who inspect the submerged pumps.

Frequently Asked Questions

Does the Jet d'Eau run all the time?

No, it is turned off for safety during high winds or freezing conditions, and for scheduled maintenance. It typically runs from 9 a.m. to 11:15 p.m. in summer and with reduced hours in winter.

How high does the water jet reach?

The jet reaches approximately 140 meters (460 feet), equivalent to a 46-story building. The water rises at 200 km/h (124 mph).

Why was the Jet d'Eau originally built?

It was created in 1886 as a relief valve for a hydraulic plant supplying power to Geneva's industries, releasing excess water pressure.