An official of the Office du Tourisme of Reims has told me that the Halte Nautique in Reims will not be open this year. This is becuause there will be extensive work "enhancing the borders of the canal" in central Reims. This work will include removing the Charles de Gaulle bridge, which crosses the canal right next to the Halte Nautique.
Work will begin May 2 on the current roadway, Blvd Paul Doumer, which runs alongside the canal on the cathedral side from Rue Liebergier to the next bridge to the south. The first stage will be to destroy the current center median and then recenter the 4 lanes of roadway to increase the depth of the canal side right of way. Beginning May 27 the Dde Gaulle bridge will be closed permanently. The bridge will be dismantled. The Blvd Paul Doumer will be completely closed from July 29 to August 2. The auto route (the main north south 4 lane restricted access road) will be closed August 3 and 4.
The newspaper article says the canal will be closed the end of August but I have not yet seen any announcement of that from VNF. I am going to write the territorial director and see if I can get some information. Currently the southern end of the Aisne à la Marne is scheduled to be closed from August 26 to late in September for annual chomage. If the canal is also closed in Reims it will become ver difficult to access Sillery as a winter mooring. If I can find out more I will report.