Spring 2019 Quebec Flood Monitoring and Satellite Imagery

April 14 to May 28, 2019 flood and landslide monitoring data for Quebec. It includes geolocated event points, affected municipalities, open water extent polygons from Radarsat-2 and Sentinel satellites, and visible/near-infrared satellite imagery over severely impacted areas. Data is provided via web services and downloadable files in formats like SHP and GEOTIF.

Use Cases

• Analyze flood extent limits derived from Radarsat-2 satellite data to model water spread dynamics.
• Map municipalities affected by flood events between April 14 and May 28, 2019 for impact assessment.
• Use oblique images from the Ottawa River and Greater Montreal Area for visual damage documentation.
• Compare open water polygons generated from Sentinel satellite data with heliborne flood limits for the Chaudière River sector.

Strengths

• Covers a defined 45-day critical event period from April 14 to May 28, 2019.
• Integrates multiple data sources including satellite imagery (Radarsat-2, Sentinel), heliborne data, and aerial surveillance.
• Data is available in multiple formats (SHP, GEOTIF, JPG) and through web services for flexible access.

Limitations

• Water extent data is a near real-time interpretation provided 'as is' without exhaustive validation and may contain errors, especially in urban areas.
• Sample data and specific record counts (rows/columns) are unavailable, limiting pre-analysis assessment of data volume and structure.

Provenance

Source

Government and Municipalities of Québec, with contributions from Natural Resources Canada and Dromedaire Géo-Innovations.

Collection Method

Satellite data interpretation (Radarsat-2, Sentinel), heliborne surveys, aerial imagery from the National Aerial Surveillance Program, and operational event monitoring.

Time Range

April 14,提议 2019 to May 28, 2019

Freshness

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Geography

Quebec, Canada, with specific focus on the Chaudière River, Ottawa River, and Greater Montreal Area.