About tides, currents, and water levels

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

Services and information

About tides and currents, including their causes and how we use their data.

Notices on digital services and water level gauges.

List of tidal terms and expressions, and acronym meanings.

About the vertical datum reference on navigational charts.

Tides and tidal streams, shallow water effects and non-tidal influences.

Background on tidal, current and water level surveying.

At the Canadian Hydrographic Service, innovation is a guiding principle for the bold digital transformation initiative now underway.

Enabling more women to participate equitably and assume more leadership roles in the field of hydrography.

Download your 2022 Canadian Tide and Current Tables now to help navigate safely through Canadian waters.