Canal de Haute Perche

The Haute Perche Canal (Canal de Haute Perche [kanal də ot pɛʁʃ], Breton: Kanol ar Perche Uhel), despite its title, is a natural river, the Rivière de Haute-Perche, that has been slightly canalised to improve navigation between its mouth in the Bay of Bourgneuf at the port town of Pornic and the upstream settlements of Le Clion-sur-Mer, Chauvé and Arthon-en-Retz. It is located in the Pays de Retz in the Loire-Atlantique department and the Pays de la Loire region. It has also been known as the Canal de Pornic since the 16th century and was sometimes called the Étier de Haute Perche. Historically, it was called the Rouet, after the wheels of the water mills in the port.

Canal data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).