Lake monitoring

ASL actively monitors the lake throughout the year to anticipate and prevent socio-environmental problems which might affect it.

Key figures

0 km²

the lake surface = 90,000 football fields

0 km

the perimeter of the lake, equal to 2 days and nights of non-stop walking

0 km

the length of rivers feeding Lake Geneva, placed in a single line

0 years

the average time a drop of water spends in the lake

0 m

the deepest part of the lake = the Eiffel Tower (324 m with the antenna)

0 m

the average depth of the lake = the height of the Geneva Jet d'Eau

Why monitor the lake?

Origin and description

The ASL was created in 1980 when the lake was suffering from eutrophication (a shortage of oxygen). Through its work, the ASL has made a significant contribution to improving water quality.

The problem

Today other threats, such as plastics, micropollutants and invasive species are less visible but just as worrying.

The solution

Thanks to its many members who keep a constant lookout for Lake Geneva, the ASL is regularly alerted to potential issues with pollution or other threats to the lake. This allows it to act swiftly to put pressure on the authorities or propose solutions to preserve the quality of the lake’s water and its wealth of biodiversity.

Videos

Gallery

The fauna of Lake Geneva is protected to the maximum

The Lake Geneva watershed region is monitored from upstream to downstream

The flora occupies a very important place in the biodiversity of Lake Geneva.