The High Resolution Digital Elevation Model Mosaic provides a unique and continuous representation of the high resolution elevation data available across the country. The High Resolution Digital Elevation Model (HRDEM) product used is derived from airborne LiDAR data (mainly in the south) and satellite images in the north. The mosaic is available for both the Digital Terrain Model (DTM) and the Digital Surface Model (DSM) from web mapping services. It is part of the CanElevation Series created to support the National Elevation Data Strategy implemented by NRCan. This strategy aims to increase Canada's coverage of high-resolution elevation data and increase the accessibility of the products.Unlike the HRDEM product in the same series, which is distributed by acquisition project without integration between projects, the mosaic is created to provide a single, continuous representation of strategy data. The most recent datasets for a given territory are used to generate the mosaic. This mosaic is disseminated through the Data Cube Platform, implemented by NRCan using geospatial big data management technologies. These technologies enable the rapid and efficient visualization of high-resolution geospatial data and allow for the rapid generation of dynamically derived products. The mosaic is available from Web Map Services (WMS), Web Coverage Services (WCS) and SpatioTemporal Asset Catalog (STAC) collections. Accessible data includes the Digital Terrain Model (DTM), the Digital Surface Model (DSM) and derived products such as shaded relief and slope.The mosaic is referenced to the Canadian Height Reference System 2013 (CGVD2013) which is the reference standard for orthometric heights across Canada.Source data for HRDEM datasets used to create the mosaic is acquired through multiple projects with different partners.Collaboration is a key factor to the success of the National Elevation Strategy. Refer to the “Supporting Document” section to access the list of the different partners including links to their respective data.

The Canada Centre for Mapping and Earth Observation (CCMEO) has created a 30m resolution radar mosaic of Canada's landmass from the RADARSAT Constellation Mission (RCM). This product highlights different types of radar interaction with the surface, which can assist the interpretation and study of land cover on a national scale. The national mosaic is made up of 3222 RCM images acquired between August 2023 and February 2024. (Credit: RADARSAT Constellation Mission imagery © Government of Canada [2024]. RADARSAT is an official mark of the CSA.)

The High Resolution Digital Elevation Model (HRDEM) Mosaic represents the current and continous coverage of high-resolution elevation data available in Canada. This version of the mosaic, available at a spatial resolution of 1 meter, is a combination of DEM data generated from airborne LiDAR data and available at this resolution. This data collection includes a digital terrain model (DTM) and a digital surface model (DSM) for the entire coverage. The mosaic product is referenced to the Canadian Geodetic Vertical Datum 2013 (CGVD2013). The data in this collection have been reprojected from the source reference system to the Canada Atlas Lambert projection (EPSG:3979). In case of overlap between data sources, pixel values are set according to the most recent source. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The High Resolution Digital Elevation Model (HRDEM) Mosaic represents the current and continous coverage of high-resolution elevation data available in Canada. This version of the mosaic, available at a spatial resolution of 1 meter, is a combination of DEM data generated from airborne LiDAR data and available at this resolution. This data collection includes a digital terrain model (DTM) and a digital surface model (DSM) for the entire coverage. The mosaic product is referenced to the Canadian Geodetic Vertical Datum 2013 (CGVD2013). The data in this collection have been reprojected from the source reference system to the Canada Atlas Lambert projection (EPSG:3979). In case of overlap between data sources, pixel values are set according to the most recent source. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The High Resolution Digital Elevation Model (HRDEM) Mosaic represents the current and continous coverage of high-resolution elevation data available in Canada. This version of the mosaic, available at a spatial resolution of 1 meter, is a combination of DEM data generated from airborne LiDAR data and available at this resolution. This data collection includes a digital terrain model (DTM) and a digital surface model (DSM) for the entire coverage. The mosaic product is referenced to the Canadian Geodetic Vertical Datum 2013 (CGVD2013). The data in this collection have been reprojected from the source reference system to the Canada Atlas Lambert projection (EPSG:3979). In case of overlap between data sources, pixel values are set according to the most recent source. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The High Resolution Digital Elevation Model (HRDEM) Mosaic represents the current and continous coverage of high-resolution elevation data available in Canada. This version of the mosaic, available at a spatial resolution of 2 meters, is a combination of DEM data from airborne LiDAR (mainly in the south) and satellite imagery (in the north). This data collection includes a digital surface model (DSM) available for the entire coverage, and a digital terrain model (DTM) available only where LiDAR data coverage exists. The mosaic product is referenced to the Canadian Geodetic Vertical Datum 2013 (CGVD2013). The data in this collection have been reprojected from the source reference system to the Canada Atlas Lambert projection (EPSG:3979). In case of overlap between data sources, pixel values are set according to the most recent source. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The High Resolution Digital Elevation Model (HRDEM) Mosaic represents the current and continous coverage of high-resolution elevation data available in Canada. This version of the mosaic, available at a spatial resolution of 2 meters, is a combination of DEM data from airborne LiDAR (mainly in the south) and satellite imagery (in the north). This data collection includes a digital surface model (DSM) available for the entire coverage, and a digital terrain model (DTM) available only where LiDAR data coverage exists. The mosaic product is referenced to the Canadian Geodetic Vertical Datum 2013 (CGVD2013). The data in this collection have been reprojected from the source reference system to the Canada Atlas Lambert projection (EPSG:3979). In case of overlap between data sources, pixel values are set according to the most recent source. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The High Resolution Digital Elevation Model (HRDEM) Mosaic represents the current and continous coverage of high-resolution elevation data available in Canada. This version of the mosaic, available at a spatial resolution of 2 meters, is a combination of DEM data from airborne LiDAR (mainly in the south) and satellite imagery (in the north). This data collection includes a digital surface model (DSM) available for the entire coverage, and a digital terrain model (DTM) available only where LiDAR data coverage exists. The mosaic product is referenced to the Canadian Geodetic Vertical Datum 2013 (CGVD2013). The data in this collection have been reprojected from the source reference system to the Canada Atlas Lambert projection (EPSG:3979). In case of overlap between data sources, pixel values are set according to the most recent source. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The High Resolution Digital Elevation Model (HRDEM) Mosaic represents the current and continous coverage of high-resolution elevation data available in Canada. This version of the mosaic, available at a spatial resolution of 2 meters, is a combination of DEM data from airborne LiDAR (mainly in the south) and satellite imagery (in the north). This data collection includes a digital surface model (DSM) available for the entire coverage, and a digital terrain model (DTM) available only where LiDAR data coverage exists. The mosaic product is referenced to the Canadian Geodetic Vertical Datum 2013 (CGVD2013). The data in this collection have been reprojected from the source reference system to the Canada Atlas Lambert projection (EPSG:3979). In case of overlap between data sources, pixel values are set according to the most recent source. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The High Resolution Digital Elevation Model (HRDEM) Mosaic represents the current and continous coverage of high-resolution elevation data available in Canada. This version of the mosaic, available at a spatial resolution of 2 meters, is a combination of DEM data from airborne LiDAR (mainly in the south) and satellite imagery (in the north). This data collection includes a digital surface model (DSM) available for the entire coverage, and a digital terrain model (DTM) available only where LiDAR data coverage exists. The mosaic product is referenced to the Canadian Geodetic Vertical Datum 2013 (CGVD2013). The data in this collection have been reprojected from the source reference system to the Canada Atlas Lambert projection (EPSG:3979). In case of overlap between data sources, pixel values are set according to the most recent source. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**