Territory Flooded in 2017 and 2019 in Quebec, Canada

Government and Municipalities of Québec provide a geospatial dataset delineating areas flooded during the exceptional spring floods of 2017 and 2019. The data is derived from an annex adjusted to a 2019 decree and is considered comparable to a low-current zone under a 2021 transitional flood risk regulation. It was last updated on 2026-04-22 and is available under a CC-BY-4.0 license.

Use Cases

• Modeling flood risk and vulnerability based on historical flood extents.
• Informing land-use planning and zoning decisions based on designated flood-prone areas.
• Assessing property and infrastructure exposure to past flood events.
• Supporting regulatory compliance and policy analysis related to flood risk management.

Strengths

• Data is derived from official government decrees and regulations.
• Covers two distinct major flood events (2017 and 2019) for comparative analysis.
• Available in multiple geospatial formats (PDF, ESRI REST, GEOJSON, GPKG, FGDB/GDB).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Government and Municipalities of Québec | Gouvernement et municipalités du Québec

Collection Method

Likely derived from official mapping and regulatory documents (Decree 814-2019, ministerial orders).

Time Range

Covers flood events from 2017 and 2019.

Freshness

Last updated 2026-04-22 19:11:15.415218; freshness should be verified.

Geography

Quebec, Canada.