Tides, currents, and water levels

Predicted times and heights of high and low waters, and the hourly water levels for over seven hundred stations in Canada.

Follow us

New water level tools are now online and we want to hear from you! Try out our new:

Send your feedback about our new tools to chsinfo@dfo-mpo.gc.ca.

Please note: this site is under development and will be rolled out to tides.gc.ca this summer, do not bookmark this page.

Services and information

Canadian tide and current tables

Predicted times and heights of high and low tides, as well as times and speeds of weak and strong currents.

Tidal and water level stations

Interactive map showing observations, predictions, and forecasted water level data.

Tides and water levels data archive

Monthly mean water level, historical tide and water level station data, and water level station benchmarks.

Great Lakes – St. Lawrence River Information

Monthly water level bulletins and information on the Great Lakes – St. Lawrence river system.

Water levels by phone

Telephone information system on water levels and tides.

Web services

Web services for accessing official data on navigating modelled surface currents and water levels.

About tides, currents, and water levels

Learn about tides and currents in Canada and the history of tidal measurements.

Contact us

Contact us for more information on tides currents or water levels.

What we are doing


Image of ship in harbour

Download 2021 Tides Tables

The complete publication of the 2021 Canadian Tide and Current Tables are now available to download for free.

Release of CHS NONNA-10

Release of CHS NONNA-10

Access the new CHS NONNA-10 for an improved, more accessible way to see beneath the surface.