Water Levels Forecasts and Temperatures
Water level forecasts and observations, including temperatures, tide and current tables for the central region.
Most requested
Services and information
Expertise hydrique et barrages (FR only)
French onlyMinistère de l'Environnement et de la Lutte contre les changements climatiques of Quebec.
Water Level Forecasts Bulletin
Expected minimum water levels in Montréal, Sorel and Trois-Rivières. Average water level on the Lake Ontario and Ottawa river outflow is also available.
Water Temperature
Canadian Coast Guard.
Forecasts for the Estuary and the Gulf of St. Lawrence
Data calculated by the Canadian Hydrographic Service and available on the St. Lawrence Global Observatory's website.
St. Lawrence Seaway Management Corporation
Water levels and environnemental data for the Welland Canal and from Montreal to Lake Ontario.
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