The implementation agenda for the Rhine features several measures and studies, virtually all of which are progressing as planned. The study into the benefit and necessity of keeping open the option of changing the discharge distribution among the Rhine tributaries after 2050 is taking longer than planned. In the purview of this study, a tool that has already been developed is currently being prepared for use in the Nederrijn-Lek area. This is expected to enable completion of the study in 2017. Subsequently, the Minister of Infrastructure and the Environment will decide whether or not the option will be kept open, at the suggestion of the Delta Programme Commissioner and following consultation with the provinces and district water boards. This decision, expected by early 2018, will be incorporated into Delta Programme 2019. The Rhine Estuary-Drechtsteden Regional Consultative Body and the Rhine Administrative Platform are involved in the process and provide input wherever required.