The Belgian Geo portal indicates the position of the border markers and the boundary between the 3 countries but does not indicate the condominium. The German geo portal map above does indicate how the river Our is shared between Germany and Luxembourg.

This is in contrast to the Luxembourg map below which shows its ownership of the river but not Germany’s.

The Germany-Luxembourg border separates the German states of Saarland and Rhineland-Palatinate from the Grand Duchy of Luxembourg. The demarcation follows watercourses in its entirety: the Moselle in its southern part, the Sauer in the middle, and the Our in the North. The border begins in the South near Schengen and ends at Ouren.

The boundary treaty of 1984 deals with matters of detail concerning the demarcation of the border. In essence the treaty is based on the 1816 treaty between Luxembourg and Prussia which established joint sovereignty over the rivers. Bridges are jointly owned and maintained.