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 email@example.com.
Services and information
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.
Current Predictions By Station
Predicted times and speeds of weak and strong currents.
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 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 for more information on tides currents or water levels.
What we are doing
- Canadian Hydrographic Service Non-Navigational (NONNA) Bathymetric Data
- Chart Index
- Natural Resource Maps
- S-100 services for safe and optimized e-navigation
- Automated Hydrographic Surface Vehicles
- Channel Survey and Sounding Vessels
- The Science of Hydrography
CHS Digital Transformation Initiative
At the Canadian Hydrographic Service, innovation is a guiding principle for the bold digital transformation initiative now underway.
Client suggested enhancements have been implemented to the CHS NONNA Data Portal including migration to chart datum and enhanced tools for selecting and downloading large geographic areas.
2023 Tide Tables Available Now
Download your 2023 Canadian Tide and Current Tables now to help navigate safely through Canadian waters.