Indexes of the National Topographic System of Canada

Topographic maps produced by Natural Resources Canada conform to the National Topographic System (NTS) of Canada. Indexes are available in three standard scales: 1:1,000,000, 1:250,000 and 1:50,000. The area covered by a given mapsheet is determined by its latitude and longitude. 1:1,000,000 mapsheets are identified by a combination of three numbers (e.g. 098). 1:250,000 mapsheets are identified by a combination of numbers, and letters ranging from A through P (e.g. 098C). Sixteen smaller segments (1 to 16) form blocks used for 1:50,000 mapping (e.g. 098C03).

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 17:28 (UTC)
Created	April 17, 2026, 17:28 (UTC)
contact_email	geoinfo@nrcan-rncan.gc.ca
contact_person	{"fr": "Gouvernement du Canada; Ressources naturelles Canada; Secteur de la politique et des résultats,geoinfo@nrcan-rncan.gc.ca", "en": "Government of Canada; Natural Resources Canada; Strategic Policy and Results Sector,voice: 1 (800) 6612638,,geoinfo@nrcan-rncan.gc.ca"}
criticality_level	[]
data_dictionary	EPSG:4269,https://www.epsg-registry.org,8.6.2
geographic_scope	[]
open_canada_collection	fgp
open_canada_date_published	2015-01-01 00:00:00
open_canada_keywords	{"fr": ["Canada", "Sciences de la Terre", "Index vectoriels du système national de référence cartographique du Canada", "SNRC", "Index", "Sciences de la terre", "Cartographie", "Géographie", "Données géographiques", "Système d'information géographique", "Géomatique", "Topographie", "Toponymie", "Carte", "Carte géographique", "Carte topographique"], "en": ["Canada", "Earth Sciences", "Vector Indexes of the National Topographic System of Canada", "NTS", "Indexes", "Earth sciences", "Cartography", "Geography", "Geographic data", "Geographic information systems", "Geomatics", "Topography", "Toponymy", "Maps", "Geographical maps", "Topographical maps"]}
open_canada_subject	["form_descriptors"]
sensitivity_level	unrestricted
title_fr	Index du système national de référence cartographique du Canada
update_frequency	not_planned