Tides, Water Levels and Currents

Canadian Hydrographic Service

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

• Atlas of Tidal Currents

• Stations

• Web Services

Tides and Water Levels Historical Data

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

• List of Stations

Water Survey of Canada

Responsible for the collection, interpretation and dissemination of standardized water resource data and information in Canada.

NOAA Water Levels Station Selection (for US Waters)

NOAA's Center for Operational Oceanographic Products and Services (CO-OPS) is the authoritative source for accurate, reliable, and timely tides, water levels, currents and other oceanographic information in the United States.

Water Level Forecasts and Temperatures

Central region

Produced by the Canadian Coast Guard, give the expected minimum water levels in the central region.

Great Lakes – St. Lawrence River (CHS)

Central region

Great Lakes’ water movement, water levels and historical data.

Predicted Water Levels & Velocities

Pacific region

Avadepth, an acronym for available depths, is a Canadian Coast Guard application designed to assist the mariners in determining the maximum draft and the best sailing times on the river.

• Weekly report (PDF)