Permafrost, Atlas of Canada, 5th Edition

Contained within the 5th Edition (1978 to 1995) of the National Atlas of Canada has a large that shows the extent of permafrost and abundance of ground ice; mapping units are based on physiographic regions. Point data on map give permafrost temperature and thickness for specific sites. The second, smaller, map shows the mean annual ground temperatures. Graphs show four shallow temperature profiles (to 25 metres depth), and four deep temperature profiles (to several hundred metres depth).

Heginbottom, J. A., Dubreuil, M. -A. & Harker, P. (1995). Canada, permafrost. In The National Atlas of Canada (5 ed.). Natural Resources Canada, Geomatics Canada, MCR Series, 4177, Natural Resources Canada. https://doi.org/10.4095/294672

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 21:15 (UTC)
Created	April 17, 2026, 21:15 (UTC)
contact_email	FGP-PGF@NRCan-RNCan.gc.ca
contact_person	{"en": "Government of Canada;Natural Resources Canada;Strategic Policy and Innovation Sector, Federal Geospatial Platform", "fr": "Gouvernement du Canada;Ressources naturelles Canada;Secteur de la politique stratégique et de l’innovation, Plateforme géospatiale fédérale"}
criticality_level	[]
data_dictionary	EPSG:3978,http://www.epsg-registry.org,
geographic_scope	[]
open_canada_collection	fgp
open_canada_date_modified	2021-07-22 00:00:00
open_canada_date_published	2016-09-25 00:00:00
open_canada_keywords	{"en": ["Permafrost", "Temperature", "Soil"], "fr": ["Pergélisol", "Température", "Sol"]}
open_canada_subject	["nature_and_environment"]
sensitivity_level	unrestricted
title_fr	Pergélisol, Atlas du Canada, 5e édition
update_frequency	as_needed