The lac d'Orient was created on a diversion of the Seine in 1966 in the Aube department. It has a capacity of 207,8 million m³ and is retained by five dikes made of compacted clay materials, varying in height from 13 to 82 ft (4 to 25 m). During a major flood in 2018, these barriers limited the consequences of water excess on the areas downstream, including the Paris' region. It was the first time that the artificial lake was entirely filled.