Coherent hydrological numerical terrain models at the regional scale

These digital terrain models (DTM) offer a regional numerical representation of Quebec's relief based on altimetric (altitude) and planimetric (rectangular or geographic) data. They are the result of a collaboration between the Ministry of Natural Resources and Forests (MRNF) and Natural Resources Canada (NRCan) within the framework of the Agreement to produce an up-to-date digital map of northern Quebec and the creation of the product “National Hydro Network (RHN)” for the territory of Quebec.

When integrated into a geographic information system, these models allow the implementation of multiple types of spatial analyses such as natural risks, landscape analysis, infrastructure implementation, etc.

The MNTs are obtained as a result of hypsometric and hydrographic data processing that uses the concept of hydro-coherence consisting in interpolating altimetric values by ensuring a connected drainage network and an accurate representation of ridges and watercourses. The oriented RHN filament makes it possible to grade lakes and to control the altimeter descent of watercourses. The final product is a quality portrait of relief on a scale of 1/50,000. DNTs provide altitude values that are based on a grid with a resolution of 0.324 arcseconds in geographic coordinates, which corresponds to a resolution of about 10 meters in the field.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Simple

Date ( RI_367 )
2018-02-22
Date ( RI_366 )
2018-02-22
RI_418
  Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère des Ressources naturelles et des Forêts - Direction générale de l’information géospatiale ( )
https://www.donneesquebec.ca
Status
historicalArchive; archiveHistorique RI_594
Maintenance and update frequency
notPlanned; nonPlanifié RI_542
Keywords ( RI_528 )
  • Altitude
  • Hydro coherence
  • Hydrography
  • Hypsometry
  • MNA
  • DEM
  • Model
  • north
  • Nordic
  • Terrain
  • Topography
  • Elevation
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
grid; grille RI_636
Metadata language
eng; CAN
Metadata language
fra; CAN
Topic category
  • Geoscientific information
Begin date
0001-01-01
N
S
E
W
thumbnail


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

  • GeoTIF ( unknown )

  • HTML ( unknown )

  • PDF ( unknown )

  • SHP ( unknown )

  • WMS ( unknown )

  • WMTS ( unknown )

RI_418
  Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère des Ressources naturelles et des Forêts - Direction générale de l’information géospatiale ( )
https://www.donneesquebec.ca
OnLine resource
Download index (csv format) per sheet 1/50,000 ( HTTPS )

Dataset;CSV;fra

OnLine resource
Download index (csv format) per sheet 1/250,000 ( HTTPS )

Dataset;CSV;fra

OnLine resource
Directory of NCDs per sheet 1/50,000 ( HTTPS )

Dataset;GeoTIF;fra

OnLine resource
Directory of NCDs per sheet 1/250,000 ( HTTPS )

Dataset;GeoTIF;fra

OnLine resource
Interactive map of NCDs ( HTTPS )

Dataset;HTML;fra

OnLine resource
Download card per sheet 1/50,000 ( HTTPS )

Dataset;HTML;fra

OnLine resource
Download card per sheet 1/250,000 ( HTTPS )

Dataset;HTML;fra

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

Dataset;HTML;fra

OnLine resource
Map index per sheet 1/50,000 ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Map index per sheet 1/250,000 ( HTTPS )

Supporting Document;PDF;fra

OnLine resource
Download index (SHP format) per sheet 1/50,000 ( HTTPS )

Dataset;SHP;fra

OnLine resource
Download index (SHP format) per sheet 1/250,000 ( HTTPS )

Dataset;SHP;fra

OnLine resource
MNT WMS service ( HTTPS )

Web Service;WMS;fra

OnLine resource
MNT WMS service ( HTTPS )

Web Service;WMS;fra

OnLine resource
WMTS MNT service ( HTTPS )

Web Service;WMTS;fra

File identifier
50ea1add-c7d3-4425-a695-e49618cf7ffe XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2025-11-11
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 - Direction générale de l’information géospatiale ( )
https://www.donneesquebec.ca
 
 

Overviews

overview

Spatial extent

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thumbnail


Keywords


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Associated resources

Not available