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New York State Canal Corporation

Notice to Mariners

July 26, 2023

Champlain Canal – Fort Edward to Comstock

Mariners are advised of harmful algae blooms (HAB) that have been reported at several locations in the Canal between Champlain Canal Lock C-7 in Ft. Edward and Lock C-11 in Comstock.

Exposure to HABs and toxins can cause symptoms such as diarrhea, nausea or vomiting; skin, eye or throat irritation and allergic reactions or breathing difficulties. People and pets should avoid contact with HABs and should rinse off with clean water if contact occurs. 

No swimming or other water related activities should be attempted in these areas of the Canal. Boaters should use gloves when handling lines in the lock chamber. Avoid water contact while condition persists.

A chart covering the affected area can be found at to

Features on the Champlain 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.