Slope class (BDTQ)

__The link: *Access the data directory* is available in the section*Dataset Description Sheets; Additional Information*__.

**Slope classes** express the slope of the terrain in a relatively homogeneous area with a minimum area of 0.5 ha. They are generated from a numerical model that groups terrain slopes into six classes:

+ 0-3% zero

+ Low by 4-8%

+ 9-15% soft

+ Moderate by 16-30%

+ 31-40% strong

+ Steep by 41% or more

These data cover almost all of Quebec south of the 52nd parallel. This map is presented in two groups: grouping at the provincial level and grouping at the scale of 1/250,000. Each grouping represents an assembly of sheets produced on a scale of 1/20,000.

The datasets were originally produced in 2005 and then updated in 2006. In 2010, they were enhanced with slope information for the northernmost part. No updates have been made since then.

__For more information, please refer to the document: [Products presenting the concept of slope] (https://diffusion.mffp.gouv.qc.ca/Diffusion/DonneeGratuite/Foret/DONNEES_FOR_ECO_SUD/Classes_pente/01-Documentation/Produits_presentant_la_notion_de_pente.pdf)

__

__ ⚠️ Notes: __ The numerical terrain model is prepared from the level curves and altitude points that come from the topographic map at a scale of 1/20,000 and 1/50,000 from the Quebec Topographic Database (BDTQ). This geographic database was produced in 2010 and has never been updated.

__ 🕰️ Former names:__ Numerical slope classes, Slope class

**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Simple

Date ( RI_367 )
2017-11-01
Date ( RI_366 )
2017-11-01
RI_418
  Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère des Ressources naturelles et des Forêts - 🍃 Secteur des Forêts - Direction des inventaires forestiers (DIF) ( )
https://www.donneesquebec.ca
Status
historicalArchive; archiveHistorique RI_594
Maintenance and update frequency
unknown; inconnu RI_543
Keywords ( RI_528 )
  • Slope class
  • DIF
  • Forest Inventory Department
  • Forest
  • HackQC18
  • Ecoforest inventory
  • Pente
  • Numerical slope
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • Government information
Use limitation
Creative Commons 4.0 Attribution (CC-BY) licence – Quebec (https://www.donneesquebec.ca/fr/licence/)
Access constraints
license; licence RI_606
Use constraints
license; licence RI_606
Spatial representation type
vector; vecteur RI_635
Metadata language
eng; CAN
Metadata language
fra; CAN
Topic category
  • Geoscientific information
Begin date
2010-01-01
End date
2010-12-31
N
S
E
W
thumbnail


Reference system identifier
unknown / unknown / unknown
Distribution format
  • CSV ( unknown )

  • FGDB/GDB ( unknown )

  • GEOJSON ( unknown )

  • HTML ( unknown )

  • PDF ( unknown )

  • SQLITE ( unknown )

  • XLS ( unknown )

  • other ( unknown )

RI_418
  Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère des Ressources naturelles et des Forêts - 🍃 Secteur des Forêts - Direction des inventaires forestiers (DIF) ( )
https://www.donneesquebec.ca
OnLine resource
ðdownload links per sheet 1/250,000 ( HTTPS )

Dataset;CSV;fra

OnLine resource
Provincial slope class map ( HTTPS )

Dataset;FGDB/GDB;fra

OnLine resource
ðdownload links per sheet 1/250,000 (ð️ Overview of sheets) ( HTTPS )

Dataset;GEOJSON;fra

OnLine resource
ĐOpen forest ( HTTPS )

Dataset;HTML;fra

OnLine resource
Original metadata (https://www.donneesquebec.ca) ( HTTPS )

Dataset;HTML;fra

OnLine resource
READ ME ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Products presenting the concept of slope ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Slope class availability map ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Procedures for using a web service ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Data download guide ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Provincial slope class map ( HTTPS )

Dataset;SQLITE;fra

OnLine resource
Data code dictionary ( HTTPS )

Dataset;XLS;fra

OnLine resource
ðWeb mapping service ( HTTPS )

Dataset;other;fra

File identifier
2df11367-cc4a-402b-bf40-baa0b677d1c1 XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2025-12-02
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
HNAP ISO:19115 - 2003
RI_418
  Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère des Ressources naturelles et des Forêts - 🍃 Secteur des Forêts - Direction des inventaires forestiers (DIF) ( )
https://www.donneesquebec.ca
 
 

Overviews

overview

Spatial extent

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thumbnail


Keywords


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