Man-made lake and a motorway

The construction of the motorway in 1974 led to the creation of a man-made lake. In 1977, the Ilettes lakes were formed on the location of a former excavation site where the materials for the motorway had been extracted. This construction contributed to the “artificialization” of the land, harming the quality of groundwater and altering the natural water cycles and the local ecosystem. However, the creation of these lakes also serves as a balancing measure, with the creation of a fishing reserve, a leisure centre and a benchmark for biodiversity in the third lake.