Article A322-3-5 of the French Sports Code
In each establishment organising water sports activities mentioned in sub-section 2, in a place visible to all, a board displays a map of the areas in common use, indicating: – zones that are prohibited, dangerous or reserved for different uses; -the authorised limits of navigation and their markings. For river courses, this map indicates the class of the course with reference to the classification criteria set out in Annex III-12.