Canadian Elevation Models
NOTE 2024-08-04: This dataset is currently being integrated with windPRO.
Introduction
The Canadian elevation model in its 0.75-arc-second resolution is a digital elevation model (DEM’s) produced by Natural Resources Canada (NRCan). CDEM is mainly based on elevation contours and hydrographic data from NRCan's Geospatial Data Base at the scale of 1:50,000, or at other scales provided by other provinces and territories. Temporal coverage is 1945-2011. The source dataset holds different resolutions from 0.75-arc-second (below N69) to 3-arc-second (above N81). For consistency, windPRO always delivers the data with a 0.75 arc-second resolution - with the coarser tiles being resampled with a bi-linear algorithm.
Please consult the product-specification (see link below) for more details.
Dataset Overview
- Spatial Coverage: Canada
- Resolution:
- In windPRO: 0.75 arc-second (approximately 25m)
- Source data: 0.75 arc-second resolution below N69, 3-arc-seconds north of N81, other areas are typically 1.4 arc-second resolution (see image to the right).
- Data-type: Digital Elevation Model (DEM)
- Coordinate system:
- Horizontal: Geographic WGS - NAD83 (EPSG:4617)
- Vertical: Canadian Height Reference System, 1928 (CGVD28)
- Version: This is version 1.1 of CDEM. EMD procured this dataset in august 2024.
- Vertical Accuracy: N/A
Usage Notes
- This is a legacy DEM product that is no longer supported by the Natural Resources Canada as it may not meet current government standards.
Availability from within WindPRO
The data are available directly from within windPRO in 0.75-arc-second (~25-meter) resolution. The data can be accessed from the online-services in the following objects:
- Line Object (with purpose to height contour lines)
- Elevation Grid Object
License and Attribution
The product belongs to the open data of Natural Resources Canada (NRCan). The data have been licensed under a ‘ Open Government Licence – Canada (version 2.0)' - see here. Please accept the license conditions and use a proper attribution when using this dataset, such as:
Contains: Canada CDEM elevation data from Natural Resources Canada (NRCan). License: Open Government Licence – Canada. Source: Distribution through EMD and windPRO.
Acknowledgement
- Natural Resources Canada (NRCan) and the public of Canada are thanked for producing this digital elevation dataset – and disseminating it in the public domain - and thus for aiding the development of renewable energy.