Streamflow

Contained within the 5th Edition (1995) of the Atlas of Canada is a sheet with four maps. The first map shows the average annual river flow for major rivers and has adjacent graphs showing average monthly runoff for 14 selected rivers. The map is coloured by oceanic drainage areas and also shows major drainage divides and diversions. The other three maps are 1:30 000 000 inset maps of Canada: average annual 7-day low flow, average annual peak flow, and average annual runoff. Summary table for drainage areas.

Data and Resources

Additional Info

Field Value
Last Updated April 17, 2026, 17:31 (UTC)
Created April 17, 2026, 17:31 (UTC)
contact_email geoinfo@nrcan.gc.ca
contact_person {}
criticality_level []
data_dictionary ["environment"]
geographic_scope []
open_canada_collection geogratis
open_canada_date_published 1993-02-12 00:00:00
open_canada_keywords {"fr": ["bassin hydrologique", "cours d'eau", "hydrologie"], "en": ["hydrology", "rivers", "watersheds"]}
open_canada_subject ["nature_and_environment"]
sensitivity_level unrestricted
title_fr Écoulement fluvial
update_frequency as_needed