Topographic humidity index from LiDAR

The link: * Access the data directory is available in the sectionDataset description sheets; Additional information*.

As part of the provincial LiDAR sensor data acquisition project, a topographic humidity index or Topographic Wetness Index (TWI) was produced from the digital terrain model derived from aerial LiDAR (Light Detection and Ranging). The matrix layers thus produced provide information on the potential for water accumulation on the territory as a function of the slope and accumulation at a given pixel.This third party metadata element was translated using an automated translation tool (Amazon Translate).

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 21:05 (UTC)
Created	April 17, 2026, 21:05 (UTC)
contact_email	inventaires.forestiers@mrnf.gouv.qc.ca
contact_person	{"en": "Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère des Ressources naturelles et des Forêts", "fr": "Gouvernement et municipalités du Québec; Gouvernement et municipalités du Québec; Ministère des Ressources naturelles et des Forêts"}
criticality_level	[]
data_dictionary	unknown,unknown,unknown
geographic_scope	[]
open_canada_collection	fgp
open_canada_date_published	2020-11-04 00:00:00
open_canada_keywords	{"en-t-fr": ["Cartography", "DIF", "Forest Inventory Department", "Hydrography", "Hydrology", "LiDAR", "Relief", "TWI", "Terrain", "Elevation", "Government information"], "fr": ["Cartographie", "DIF", "Direction inventaires forestiers", "Hydrographie", "Hydrologie", "LiDAR", "Relief", "TWI", "Terrain", "Élévation", "Information gouvernementale"]}
open_canada_subject	["form_descriptors", "nature_and_environment", "science_and_technology"]
sensitivity_level	unrestricted
title_fr	Indice d’humidité topographique issu du LiDAR
update_frequency	P1Y