Recent and Forecast Water Level Data

A voice announcement of the present water level is available by telephone at a number of gauging stations in the network.

A listing of Hourly Water Level Heights as well as a graphical representation of water levels for the past and current month at each CHS gauging station are available.

Arctic Hourly Water Levels Current and previous month's data and profile graphs for the gauging stations in the Arctic and Hudson Bay.

The Water Levels Forecast contains a table showing the water levels forecast for the next six months – updated monthly.  

Recent Averages is a table containing Great Lakes average monthly water levels for the previous year and current year to date – updated monthly.  

The Marine Environmental Data Service (MEDS) is a branch within the Oceans Science Directorate of the Department of Fisheries and Oceans (DFO). MEDS serves as a focus for the management of physical and chemical oceanographic data in Canada and an archive centre for data on several of the more common ocean variables.

Monthly Water Level Bulletin

Other Bulletins

MEDS also distribute a weekly water level bulletin for the Great Lakes.

St. Lawrence River Monthly Bulletin Published by Environment Canada and the U.S. Army Corp of Engineers, Buffalo District.

Water level forecasts for deep draft vessels in commercial ship channels on the St. Lawrence River and the Detroit-St. Clair Rivers are provided by Canadian Coast Guard.

Arctic Tidal Predictions

The Canadian Hydrographic Service operates a website providing Tidal Predictions at selected sites around the coasts of Canada.

Important Notices