Lake Divonne, ENS de l'Ain

A 45-hectare artificial lake, impounded in 1964 on the site of marshland, Lac de Divonne is fed by sublacustrine springs. The lake is surrounded by splendid scenery, at the foot of the Haute Chaîne du Jura and bordered by the Divonne River.
Lac de Divonne, which will be awarded the "ENS" label by the Département de l'Ain in 2021, is part of the Espace naturel Sensible des marais de la Versoix. True natural and landscaped jewels of the Ain department, sites awarded the ENS "Espaces naturels sensibles" label are managed to preserve the biodiversity they host, and are designed to be open to the public (with certain exceptions due to the fragility of the environment).