Mariners are advised that the high flow conditions and decreasing water levels are resulting in increasing currents. As a result, effective July 14, 2017 at 00:01 and until further notice, the maximum permissible draft in the Montreal-Lake Ontario section will be reduced to 80.0 dm (26’-3’’) for upbound vessels only. The maximum permissible draft will remain at 80.8 dm (26’-6’’) for downbound vessels in the Montreal-Lake Ontario section and for all vessels in the Welland Canal. Vessels equipped with an approved and operational Draft Information System (DIS) will be permitted to transit at a draft of up to 7cm above the maximum allowable draft pursuant to Section 29 of the Seaway Practices and Procedures. Due to increasing currents and limitations of squat estimates related to the use of the DIS, mariners are reminded of their responsibility to take into account the ship’s individual characteristics and its tendency to list or squat so as to avoid striking bottom. Conditions will continue to be monitored closely and mariners will be promptly advised of any changes.