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New York State Canal Corporation

Notice to Mariners

Cayuga-Seneca Canal – Waterloo

June 9, 2023

Mariners are advised of an underwater inspection occurring on the Cayuga-Seneca Canal on the following schedule:

  • Monday, June 12th – Cayuga-Seneca Canal Lock CS-4 in Waterloo – All Approach Wall Areas

The inspection areas will be marked by commercial diver’s flags while divers are in the water. Boaters should reduce speed and proceed at a "No Wake" speed when transiting these areas.                       

A chart showing the affected area can be found at 

Features along the Cayuga-Seneca Canal are listed by mileage at  

The Canal Corporation urges all users and stakeholders to register to receive updates through the Notice to Mariners notification program by clicking here.

For general news, please visit or follow the Canal Corporation on FacebookInstagramTwitter, or LinkedIn.

In case of emergencies, please call the Canal Corporation’s Emergency Call Center at 833-538-1042.