The Rhine, which becomes the Waal in the Netherlands, has been exceptionally low now for most of the summer and caused major issues for shipping.

It has only a single waterlock and so there is no retention of the water in it when a period of draughts like the ones this summer happen.

Germany has had a project for adding water locks to the Rhine ongoing in burocracy purgatory for the last 26 years now, and if this situation doesn't shake things up I don't think anything ever will.