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.
- Publisher - Current Organization Name: Natural Resources Canada
- Licence: Open Government Licence - Canada
|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||
|Canadian Digital Surface Model - Product Specifications (French)||Guide||French||Access|
|CDSM product index (drag and drop the kml file in Google Earth to localize your region of interest)||Dataset||KML||
|Canadian Digital Surface Model - Product Specifications (English)||Guide||English||Access|
|Canadian Digital Surface Model|
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