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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.

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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

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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.

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

September 30, 2020

Natural Resources Canada (NRCan) is pleased to announce a new publication of the High-Resolution Digital Elevation Model (HRDEM).This new publication brings the total area of LiDAR-derived HRDEM to 385 000 km², an increase of 50 000 km² since the last update in October 2019.

This new data is distributed across six provinces: Alberta, British Columbia, Manitoba, Ontario, Quebec and Prince Edward Island (see the map below). 51 of Canada's 100 largest cities are now covered by the HRDEM product. This new data also covers areas vulnerable to flooding, including the Ottawa River and Fort McMurray regions. The LiDAR acquisitions for these two regions were funded by the Emergency Management Strategy for Canada.

This new highly detailed 3D information (see the images below) is an essential baseline for many government projects and priorities, such as flood mapping, forest inventories, climate change monitoring and urban management (e.g. smart cities).

For more information on the HRDEM product, consult the product specifications.

Explore the data!

You can download HRDEM data from the Open Government Portal. Use one of the following options to view the current inventory and to download datasets: "View on Map", "Project Footprints" or "Dataset Footprints", in KML, Shapefile or ESRI REST formats.

Instructions for downloading the MNEHR product are now available.

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 product is part of the CanElevation Series created in support of the National Elevation Data Strategy.

HRDEM coverage map as of September 2020

Legend: HRDEM coverage map as of September 2020

Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering the Chaudière River near Beauceville, Qc

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

Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering part of the North of Edmonton, AB.

Legend: Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering part of the North of Edmonton, AB.

Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering part of the Jasper National Park, AB.

Legend: Shaded 3D reliefs of the Digital Surface Model (top image) and the Digital Terrain Model (bottom image) covering part of the Jasper National Park, AB.

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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