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New High-Resolution Digital Elevation Model and building footprints derived from LiDAR data available on Open Maps !

November 9, 2021

Natural Resources Canada (NRCan) is pleased to announce the release of a range of new LiDAR-derived data on Open Maps – with data from numerous government organizations across the country.

More than 100,000 km2 of new High Resolution Digital Elevation Models (HRDEM) have been added to the HRDEM and HRDEM Mosaic products. New data are located in the provinces of British Columbia, Manitoba, Ontario, Quebec, Prince Edward Island, and the Northwest Territories. The total coverage of LiDAR-derived HRDEM and HRDEM Mosaic data is now nearly 600,000 km2 and covers 84 of the 100 largest Canadian cities!

In addition, a new visualization tool for the HRDEM Mosaic product is now available and provides quick and easy access to the HRDEM Mosaic and all of its derived products. A new and efficient way to view the most accurate elevation data in the country!

For more information on the HRDEM product, consult the product specifications or the download procedure. The HRDEM Mosaic product specifications are available here.

HRDEM Mosaic product

Legend : HRDEM product coverage in November 2021

Automatically Extracted Buildings

new building footprints

More than 1 million new building footprints have also been integrated into the Automatically Extracted Buildings product. These footprints are automatically extracted from building classifications in the LiDAR data. They contain information such as elevation and minimum and maximum building heights. The data is available either by download or through a Web Map Service.

The additions are located in the provinces of Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland and Labrador.

All of this highly detailed 3D information provides essential foundational geospatial data for many government projects and priorities, such as flood mapping, forest inventories, climate change monitoring, and urban management.

About the National Elevation Data Strategy

The National Elevation Data Strategy aims to increase high-resolution elevation data coverage for Canada and improve product accessibility. Collaboration with various partners is a key factor in the success of the Strategy, both to release existing data and to acquire new LiDAR data across the country. The HRDEM and HRDEM Mosaic products are part of the CanElevation Series created in support of the National Elevation Data Strategy.

Digital Surface Model
Digital Terrain Model

Legend: Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering a section of the Red River, MB.

Digital Surface Model
Digital  Terrain Model

Legend: Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering a part of the City of Charlottetown, P.E.I.

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High-Resolution Digital Elevation Model (HRDEM) generated from LiDAR – New data available!

June 22, 2021

Natural Resources Canada (NRCan) is pleased to announce the release of over 100,000 km2 of new data in the High-Resolution Digital Elevation Model (HRDEM) and HRDEM Mosaic. The total area of high-resolution elevation data derived from LiDAR is now nearly 500,000 km². The data is distributed across eight provinces: British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland and Labrador (see map below).

With the addition of this data, 61 of Canada's 100 largest cities are covered by the HRDEM product and the HRDEM Mosaic. This includes the entire area of both the National Capital Region and the Ottawa River, areas that are highly vulnerable to flooding. The 10,000 km2 project was carried out in collaboration with the City of Ottawa, the City of Gatineau, NRCan, the National Capital Commission (NCC) and the Province of Ontario and supported by the Emergency Management Strategy for Canada.

This highly detailed 3D information provides essential foundational geospatial data for many government projects and priorities, such as flood mapping, forest inventories, climate change monitoring and urban management.

Explore the data!

The HRDEM data can be downloaded from the Open Government Portal in KML, Shapefile or ESRI REST formats. Use one of the following options to view the current inventory: "View on Map", "Project Footprints" or "Dataset Footprints". For more information on the HRDEM product, consult the product specifications. A download procedure for the HRDEM product is also now available.

The HRDEM Mosaic is also available from WMS and WCS web mapping services – see the product specifications for more details. The WMS service facilitates the visualization of the mosaic and its derived products, while the WCS provides access to the source data.

About the National Elevation Data Strategy

The National Elevation Data Strategy aims to increase high-resolution elevation data coverage for Canada and improve accessibility to the products. Collaboration with various partners is a key factor in the success of the Strategy, both to release existing data and to acquire new LiDAR data across the country. The HRDEM and HRDEM Mosaic products are part of the CanElevation Series created in support of the National Elevation Data Strategy.

HRDEM coverage map as of June 2021

Legend: HRDEM coverage map as of June 2021

Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering downtown Ottawa, ON.

Legend: Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering downtown Ottawa, ON.

Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering the Gatineau River and the Gatineau Highway near Wakefield, Qc.

Legend: Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering the Gatineau River and the Gatineau Highway near Wakefield, Qc.

Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering the St. John’s, NL.

Legend: Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering the St. John’s, NL.

National Hydro Network (NHN) - 45 new watersheds (WS)

April 6th, 2021

Summary : 45 NHN-CL3 watersheds are published.

With the publication of these new watersheds, over 90% of watersheds covering Canada allow for better analysis of hydrological networks.

Details:

  • All 44 of Nova Scotia’s watersheds have been updated with provincial data,
  • 1 Canada/USA bi-national watersheds was regenerated.

We are in the process of restructuring the NHN model. This is the last release of the NHN in its current form.

For more information on the National Hydro Network, please visit the GeEAU website.

For more information about the Hydrographic Network Quality, please refer to the Completeness Level.

Publication map

This map shows the hydrographic watersheds affected by this release.

New Automatically Extracted Buildings are available on Open Maps!

February 8, 2021

Natural Resources Canada's Automatically Extracted Building product now includes more than 2 million buildings.

The footprint, elevation and height of buildings are automatically extracted from LiDAR data collected from the National Elevation Data Strategy developed in collaboration with various partners.

Recent additions include more than 300,000 buildings in the St. Lawrence Valley between Montreal and Trois-Rivières as well as more than 200,000 additional buildings across Canada.

Explore the data!

You can access Automatically Extracted Buildings data and documentation from the Open Government Portal. The data is available free of charge under the Open Government Licence of Canada either by download or through a Web Map Service.

High-Resolution Digital Elevation Model Mosaic: a new product to explore Canada in 3D!

December 10, 2020

Larger image

Text version

Cube-shaped illustration of multiple elevation products offered through the HRDEM mosaic product.

 

Natural Resources Canada (NRCan) is pleased to announce the release of the High-Resolution Digital Elevation Model Mosaic (HRDEM Mosaic) product. This new HRDEM Mosaic product is part of the CanElevation Series created to support the National Elevation Data Strategy implemented by NRCan.

The HRDEM Mosaic product was developed for users to visualize and interact with the data produced under the strategy. Unlike the HRDEM product in the same series, where data is separated and distributed by each acquisition project, the mosaic is created to provide a single, continuous representation of data from the Strategy. The most recent datasets for a given area are used to generate the mosaic.

The coverage of the HRDEM Mosaic product will gradually increase as new HRDEM data becomes available. Here is an overview of various derived products generated "on the fly" and offered through the new HRDEM Mosaic product.

1- Hillshade of the Digital Surface Model 2- Hillshade of the Digital Terrain Model
3- Slope map 4- Aspect map

Explore the product!

The mosaic and its derived products are available as a Digital Terrain Model (DTM) and a Digital Surface Model (DSM) using WMS and WCS web mapping services. The WMS service facilitates the visualization of the mosaic and its derived products, while the WCS provides access to the source data.

Links to the web services are available on the Open Government website. It is possible to view the WMS hillshade directly in the Open Maps viewer when the "View on Map" option is selected. The WMS and WCS links can also be integrated into GIS applications.

Download the product specification for more details.

NRCan Data Cube Platform

This mosaic is distributed through the Data Cube Platform implemented by NRCan. This platform is a powerful and scalable system based on open technologies and implemented in a cloud-computing environment. The objective of the platform is to make large geospatial datasets and time series accessible to decision-makers, stakeholders and the general public through standardized web services. These technologies for managing and exploiting geospatial big data enable fast and efficient access and visualization of high-resolution geospatial data and allow the generation of on-the-fly derived products.

National Hydro Network (NHN) - 245 new watersheds (WS)

October 15, 2020

Summary : Publication of 245 NHN datasets including: 74 NHN-CL3 watersheds.

With the publication of these new watersheds, nearly 20% of watersheds covering Canada has been improved, allowing better analysis of hydrological networks.

Details:

  • 4 watersheds have been updated, using orthophotos and imagery (05OD000, 05OH001, 05OH002 and 05OG000)
  • 10 Canada/USA bi-national watersheds were regenerated
  • 74 watersheds have been improved into NHN-CL3
  • 8 watersheds were produced to correct anomalies.

Furthermore, in maintenance effort, 149 watersheds were re-generated following watershed limits redefinitions.

Maintening NHN is done as part of the GeoBase Surface Water Project (GeEAU).

For more information about the Hydrographic Network Quality, please refer to the Completeness Level.

Publication map

This map shows the hydrographic watersheds affected by this release.

Maintenance of selected NRCan products as of April 1st, 2020

Natural Resources Canada wishes to inform you that as of April 1, 2020, certain geospatial products will no longer be corrected or maintained. They may not meet current government standards. However, they will still be available to the public.

Other products that have reached the end of their life-cycle will either be replaced or removed.

CanVec - Update available now!

December 20, 2019

The CanVec product includes the following modifications:

  • Administrative boundaries at 1 :50 000 and 1 :250 000 scales are not anymore included in the CanVec product.
  • The territorial sea limits and the Exclusive Economic Zone (EEZ) limits were modified to correspond to those of Fisheries and Oceans Canada.
  • CanVec is now available in OGC GeoPackage.
  • The GML format is not available anymore for the CanVec product.
  • Adding of attributes display_priority for the toponymic entity classes.
  • Adding of attributes geom_db for the toponymic entity classes.

Please see the CanVec Release notes for more details.

Access CanVec data as pre-packaged files through the FTP site, or by defining a custom area for downloading through the Geospatial Data Extraction tool.

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