St. Lawrence River and Gulf - Tides, Water Levels and Currents

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Water Level Predictions, Forecasts and Observations

Canadian Hydrographic Service water level stations by zone

Tide Tables

The Tide Tables are published by the Canadian Hydrographic Service. They provide predicted times and heights of the high and low waters associated with the vertical movement of the tide. The tide predictions are available in table, graphic and text formats for over seven hundred stations in Canada.

Canadian Coast Guard Water Level Forecasts

These forecasts, produced by the Canadian Coast Guard, give the expected minimum water levels in Montréal, Sorel and Trois-Rivières. Information on average water level on the Lake Ontario and Ottawa river outflow is also available.

Forecasts for the Estuary and the Gulf of St. Lawrence

Data calculated by the Canadian Hydrographic Service and available on the St. Lawrence Global Observatory's website.



Real-Time Water Level Observations

The following stations have water level observations available in table, graphic and text formats. Water levels are preliminary and subject to revision.

Montréal to Trois-Rivières

Trois-Rivières to Québec

Québec to Escoumins

Gulf of St. Lawrence

Web Services

These Web services were developed by the Canadian Hydrographic Service to provide access to official water level data.



Surface Currents

Current Tables

The Current Tables are published by the Canadian Hydrographic Service. They provide predicted times for slack water and the times and velocities of maximum current, all of which are associated with the horizontal movement of the tide.

Atlas of Tidal Currents

Tidal Current Atlases published by the Canadian Hydrographic Service present a comprehensive view of the hourly rate and direction of major tidal currents within specific coastal regions of Canada.

Web Services

These Web services were developed by the Canadian Hydrographic Service to provide access to official surface currents data.

Tides and Water Levels Historical Data

Station information, digital data inventory of observed water level data available for download.

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