FRR- LiDAR slope class matrix - GéoMONT 2023

A matrix of terrain slopes in degrees, produced from mosaics of digital terrain model images for different years and sectors from 2008 to 2020. The dataset is provided by the Government and Municipalities of Québec and was last updated on the platform in April 2026. It is available in GEOTIF format under a CC-BY-4.0 license.

Use Cases

• Modeling hydrological runoff and erosion risk based on slope angle data.
• Assessing terrain suitability for construction or infrastructure projects based on slope classes.
• Analyzing changes in landform over time based on multi-year digital terrain model mosaics.
• Training machine learning models for automated land cover or geomorphological classification based on slope features.

Strengths

• Multi-year temporal coverage from 2008 to 2020.
• Data is derived from LiDAR-based digital terrain models, which suggests high spatial precision.
• Published under a permissive CC-BY-4.0 license for reuse.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• The description metadata is limited and was translated via an automated tool.

Provenance

Source

Government and Municipalities of Québec | Gouvernement et municipalités du Québec

Collection Method

Produced from mosaics of digital terrain model images derived from LiDAR data.

Time Range

2008 to 2020

Freshness

Last updated 2026-04-22 18:32:43.262070; freshness should be verified.

Geography

Quebec, Canada (likely, based on the organization)