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New York State Canal Corporation

Notice to Mariners

Erie Canal – Tonawandas/Pendleton

July 31, 2017


Mariners are advised that the placement of herbicide is scheduled to begin on Tuesday, August 1st between Ellicott Creek and Bear Ridge Road Bridge (E-242). The work should be completed by Friday, August 4th. Any swimming in the canal is absolutely prohibited in the treatment area until one day after the application of the herbicide.


During this treatment, lockages at Lock 34/35 Lockport will be on the following schedule:

8:00 AM, 10:00 AM, 10:45 AM, 12:30 PM, 1:15 PM, 3:00 PM, 3:45 PM, 7:00 PM.


Mariners should reduce speed, stop all forward motion and proceed at a "No-Wake" speed when transiting this area.

Due to active water management intended to minimize the current in Tonawanda Creek during treatment, the water level between Lock E34 Lockport and the Genesee River in Rochester could be reduced. This drop could be as much as two (2) feet in Lockport and would taper down eastward to nearly zero in Rochester.


Visit for more information including details about the herbicide, project-specific updates, and ways to get involved in the management of hydrilla.


The profiles of the canal system can be found at

Chart 14832 covering the western portion of the treatment area can be found at

Maps covering the entire treatment area can be found at &

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