Barrages
To enable upstream salmon migration, five barrages have to be made traversable for fish: Strasbourg, Gerstheim, Rhinau, Marckolsheim and Vogelgrün. All barrages belong to Electricité de France.
Source: Die Dreisam. Jörg Lange 2007, S. 189, Lavori Verlag, Freiburg i.Brsg.