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Data related to flood mapping

Data is important to understand the risk of flooding and better prepare and respond to a flood event. Some data directly relates to where flooding has occurred or demonstrates possible areas of future flooding.

A variety of technical data contributes to flood mapping, such as Light Detection and Ranging (LiDAR) or 3D models of the landscape (ie. topographic and bathymetric data), water quantity (flow rate), water levels, meteorological and climatological data, and ice conditions.

The Government of Canada hosts open data available both internally and for the public via the Open Government Portal. Below you will find some information and links to data that supports flood mapping.

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Historical Flood Events

Explore an archive of locations where some of the largest floods have taken place in recent Canadian history.

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National Hydrographic Network (NHN)

This data describes Canada’s inland surface waters, including rivers, lakes, dams, watersheds, and more. It is intended for water and watershed management. It also has various applications related to hydrography.

Canada Flood Map Inventory (CFM) icon

Canada Flood Map Inventory (CFM)

The Flood Map Inventory shows areas in Canada where a flood hazard map has been collected by Natural Resources Canada (NRCan). The inventory provides information on how to access these maps and does not display flood zones or extents.

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Floods in Canada

NRCan’s Emergency Geomatics Services (EGS) provides accurate, real-time flood extent maps using satellite imagery and maps for ice river break up. The flood extent maps are used by emergency responders to support major flooding events in Canada and are distinct from flood hazard maps.

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Flood Susceptibility Index

Find out more about applying machine learning to create a national map of areas susceptible (or prone) to flooding. This is based on terrain, hydrography, geology, ecology, and meteorological characteristics.

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High Resolution Digital Elevation Model (HRDEM)

Explore a representation of the earth's surface in three dimensions: a 3D rendering of the land. The HRDEM can be used to create flood maps by helping to predict where water may flow during flood events.


Data Cube (in progress)

NRCan’s Data Cube platform allows you to interact with historical and current collections of satellite imagery and aerial photography. Explore landscape changes with the tools hosted on the linked webpage.

Automatically Extracted Buildings

Automatically extracted buildings

This data layer delineates building footprints that are automatically extracted from airborne LiDAR data, high-resolution optical imagery, or other sources.

Climate Data

Climate Data enables Canadians to access, visualize, and analyze climate data, and provides related information and tools to support adaptation planning and decision-making.

Hydrometric Data

Download hydrometric station data via Geospatial web services. The near real-time information presented on this website is received via satellite or land-line transmissions from hydrometric gauging.

Meteorological Data

Access historical weather, climate data, and related information for numerous locations across Canada.

Find out more about flood mapping
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