Welcome to the Maurice Lamontagne Institute - Fisheries and Oceans Canada - Thermograph Network Web site. This site provides access to water temperature data collected in various regions of the Gulf of St. Lawrence. The permanent network consists of about 20 stations where temperature has been measured almost continuously since 1993. Readings are takens at depths generally ranging from 1 to 30 meters, although some stations measure temperature at depths of up to 100 meters (Havre St. Pierre, for example). For known geographic locations, coordinates (latitude, longitude) can be entered below. Alternately, the map can be used allowing you to click on one of the black circles representing stations of the permanent network in the Gulf. Please note, however, that this map may not represent all of the available data, because the database contains a large number of time series of water temperatures collected from various locations in the Gulf of St. Lawrence since 1979.

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Starting and ending dates:

Depth (metres)


| List of all stations |