It supplies drinking water to more than 900,000 people.

The Rhône brings an average of 182 m3 of water per second into Lake Geneva

The length of the banks is 200 km

The shores of the lake offer a diversity of environments that are home to a rich and varied flora and fauna.

CIPEL

International Commission for the Protection of the Waters of Lake Geneva

Lake Geneva is the largest lake in Western Europe

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Lake temperature

At the surface of Lake Geneva: 🌡16.1 C° measured on 13.05.2024

CIPEL celebrates 60 years of existence

A look back at the major challenges and actions
that have marked these 6 decades

A 4th action plan for CIPEL

A 4th action plan for CIPEL

CIPEL's 2021-2030 action plan is structured around three main strategic axes, 12 themes and 29 actions.

The 4 seasons of Lake Geneva

What is the latest lake temperature data? To what extent does the lake warm up or cool down over the year? How does its oxygen content change? And how do its transparency and algae development fluctuate? 🤓 To get a better idea of how the lake works, follow its evolution through the seasons in our regular bulletins.

The 4 seasons of Lake Geneva
Map of Lake Geneva beaches

Map of Lake Geneva beaches

Discover the bathing water quality of the 120 beaches along Lake Geneva thanks to the interactive map, updated every year and available on our WebApp or from our secretariat.

The natural shores of Lake Geneva

Travelling exhibition to borrow free of charge

CIPEL has just put together a beautifully illustrated exhibition to raise public awareness of the need to preserve the natural environments along Lake Geneva. Visitors are invited to discover the flora and fauna of 5 distinctive environments.

The natural shores of Lake Geneva

News

CIPEL

Franco-Swiss cooperation for the benefit of Lake Geneva water

The International Commission for the Protection of the Waters of Lake Geneva (CIPEL),
an intergovernmental Franco-Swiss body, has been contributing to the coordination of water policy in the Lake Geneva watershed between France and Switzerland since 1963, and more specifically in the departments of Ain and Haute-Savoie, as well as the cantons of Vaud, Valais and Geneva.

Its perimeter, covering more than 10,000 km2, covers the Léman watershed and, more generally, the Rhône upstream of the Franco-Swiss border.

But still

The 4 seasons of Lake Geneva

Each season, discover the evolution of the lake's water temperature and other parameters related to the health of Lake Geneva.

Limnothèque

Consult and download CIPEL studies and data

Newsletter

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