Although these two sites see the largest volume of inland waterway traffic in the Walloon Region (in 2009, 9.6 million tonnes at Lanaye, 10 million tonnes at Ivoz-Ramet), the locks have reached saturation point and any problems result in traffic hold-ups that are harmful to economic activity.
Ces deux sites sont les plus importants en termes de transit fluvial en Wallonie (respectivement en 2009 : 9,6 millions de tonnes pour Lanaye, 10 millions de tonnes pour Ivoz-Ramet).