The dates of closure for navigation for 2011 are known :

The locks of the lower Rhône, except for Port Saint Louis, will be closed from 13 March at 21.00 to 21 March at 05.00 (7 days), while that of Port Saint Louis will be closed from 21.00 on 27 february to 05.00 on 7 March (7 days).

The locks of the upper Rhône will be closed from 13 March at 21.00 to 21 March at 05 (7 days).