Freshwater runoffs of the St. Lawrence at the height of Québec City

Methodology : The monthly mean run off is estimated using an empirical relationship between the St. Lawrence River discharge and the water-level at Neuville with the Bourgault and Koutitonsky (1999) method. The uncertainty is +/- 2100 m3/s at 95%.

Access the data on OGSL's web site FRESHWATER RUNOFFS - Quebec city.

Data source identification :


Modelling and Operational Oceanography Division, Canadian Hydrographic Service - Quebec Region, Maurice Lamontagne Institute, Fisheries and Oceans Canada.


Bourgault, D., and V.G. Koutitonsky, 1999. Real-Time Monitoring of the Freshwater Discharge at the Head of the St. Lawrence Estuary. ATMOSPHERE-OCEAN, 37, 203-220.

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Access and Use

Licence: Creative Commons Attribution 4.0

Data and Resources


Metadata Reference Date(s) March 2, 2020, 19:22 (UTC) (Creation)
January 6, 2022, 15:21 (UTC) (Revision)
Dataset Reference Date(s) April 12, 2017 (Creation)
January 05, 2022 (Revision)
Frequency of Update Monthly

Dataset extent

Map data © OpenStreetMap contributors

Additional Info

Field Value
Ocean Variables
  • Sub Surface Currents
  • Surface Currents
Scope Dataset
Status On Going
Maintenance Note
Point of Contact
  • Name: Denis Lefaivre
    Affiliation: Pêches et Océans Canada
    Contact Info Email:
    Role: Point of Contact
Responsible Party
  • Organisation Name / Affiliation: Pêches et Océans Canada
    Role: Originator
Spatial Extent {"type": "Polygon", "coordinates": [[[-71.1430559, 46.8767231], [-71.6419053, 46.8767231], [-71.6419053, 46.6482601], [-71.1430559, 46.6482601], [-71.1430559, 46.8767231]]]}
North Bounding Latitude 46.8767231
South Bounding Latitude 46.6482601
East Bounding Longitude -71.1430559
West Bounding Longitude -71.6419053
Temporal Extent Begin: 1955-01-01
Vertical Extent
Default Locale French
Citation identifier