Canadian Digital Surface Model The Canadian Digital Surface Model (CDSM) is part of Natural Resources Canada's altimetry system designed to better meet the users' needs for elevation data and products. The 0.75-second (~20 m) CDSM consists of a derived product from the original 1-second (30 m) Shuttle Radar Topographic Mission (SRTM) digital surface model (DSM). In these data, the elevations are captured at the top of buildings, trees, structures, and other objects rather than at ground level. A CDSM mosaic can be obtained for a pre-defined or user-defined extent. The coverage and resolution of a mosaic varies according to the extent of the requested area. Derived products such as slope, shaded relief and colour shaded relief maps can also be generated on demand by using the Geospatial-Data Extraction tool. Data can then be saved in many formats. The pre-packaged GeoTif datasets are based on the National Topographic System of Canada (NTS) at the 1:50 000 scale; the NTS index file is available in the Resources section in many formats. 2015-01-01 2019-02-18 Natural Resources Canada geoinfo@canada.ca Form DescriptorsCanadaEarth ScienceselevationreliefgeomaticsGeoBaseCDSMDEMEarth sciencesCartographyGeographyGeographic dataGeographic information systemsGeomaticsTopography Canadian Digital Surface Model, Color Shaded ReliefWMS https://maps.geogratis.gc.ca/wms/elevation_en?service=WMS&version=1.3.0&request=GetCapabilities&layers=cdsm.color-shaded-relief&legend_format=image/png&feature_info_type=text/html Canadian Digital Surface Model, Color Shaded ReliefWMS https://cartes.geogratis.gc.ca/wms/elevation_fr?service=WMS&version=1.3.0&request=GetCapabilities&layers=cdsm.color-shaded-relief&legend_format=image/png&feature_info_type=text/html Customized files (derived products, selectable extent) - Geospatial-Data Extraction tool (English)HTML http://maps.canada.ca/czs/index-en.html Customized files (derived products, selectable extent) - Geospatial-Data Extraction tool (French)HTML http://maps.canada.ca/czs/index-fr.html Pre-packaged GeoTIFF files (download directory)GeoTIF http://ftp.geogratis.gc.ca/pub/nrcan_rncan/elevation/cdsm_mnsc/ Canadian Digital Surface Model - Product Specifications (French)PDF http://ftp.geogratis.gc.ca/pub/nrcan_rncan/elevation/cdsm_mnsc/doc/MNSC_specs_produit.pdf CDSM product index (drag and drop the kml file in Google Earth to localize your region of interest)KML http://ftp.geogratis.gc.ca/pub/nrcan_rncan/elevation/cdsm_mnsc/index/cdsm_index_50k.kml Canadian Digital Surface Model - Product Specifications (English)PDF http://ftp.geogratis.gc.ca/pub/nrcan_rncan/elevation/cdsm_mnsc/doc/CDSM_product_specs.pdf NTS IndexHTML https://ouvert.canada.ca/data/fr/dataset/055919c2-101e-4329-bfd7-1d0c333c0e62

Canadian Digital Surface Model

The Canadian Digital Surface Model (CDSM) is part of Natural Resources Canada's altimetry system designed to better meet the users' needs for elevation data and products. The 0.75-second (~20 m) CDSM consists of a derived product from the original 1-second (30 m) Shuttle Radar Topographic Mission (SRTM) digital surface model (DSM). In these data, the elevations are captured at the top of buildings, trees, structures, and other objects rather than at ground level.

A CDSM mosaic can be obtained for a pre-defined or user-defined extent. The coverage and resolution of a mosaic varies according to the extent of the requested area.

Derived products such as slope, shaded relief and colour shaded relief maps can also be generated on demand by using the Geospatial-Data Extraction tool. Data can then be saved in many formats.

The pre-packaged GeoTif datasets are based on the National Topographic System of Canada (NTS) at the 1:50 000 scale; the NTS index file is available in the Resources section in many formats.

View on Map

Resources

Resource Name Resource Type Format Language Links
Canadian Digital Surface Model, Color Shaded Relief Web Service WMS English Access
Canadian Digital Surface Model, Color Shaded Relief Web Service WMS French Access
Customized files (derived products, selectable extent) - Geospatial-Data Extraction tool (English) Application HTML English Access
Customized files (derived products, selectable extent) - Geospatial-Data Extraction tool (French) Application HTML French Access
Pre-packaged GeoTIFF files (download directory) Dataset GeoTIF English
French
Access
Canadian Digital Surface Model - Product Specifications (French) Guide PDF French Access
CDSM product index (drag and drop the kml file in Google Earth to localize your region of interest) Dataset KML English
French
Access
Canadian Digital Surface Model - Product Specifications (English) Guide PDF English Access
NTS Index Guide HTML English
French
Access

Geographic Information

Spatial Feature

Contact Information

Electronic Mail Address: geoinfo@canada.ca