Calgary Tree Canopy Polygons from 2024 Aerial Imagery

Polygons outline the extent of tree cover for all land within the City of Calgary. The dataset was created by the City of Calgary using custom algorithms on aerial imagery and lidar captured in June-July 2024. It captures trees and shrubs 2 meters in height and taller for canopy coverage statistics.

Use Cases

• Calculate total canopy area and percentage coverage per neighborhood using the multipolygon geometry.
• Assess changes in urban tree cover over time by comparing the 2024 multipolygon data with previous years.
• Identify potential areas for tree planting initiatives by analyzing spatial gaps in the canopy polygons.
• Model ecosystem services like carbon sequestration by correlating canopy extent from the multipolygon field with other environmental datasets.

Strengths

• Derived from high-resolution RGBN stereo aerial imagery and lidar captured in 2024.
• Includes vegetation 2 meters and taller, providing a consistent measurement threshold.
• Data underwent a quality control process before publication.

Limitations

• The exact spatial resolution, accuracy metrics, and total row count are not provided.
• Limited to the municipal boundaries of Calgary, Canada.
• Contains only geometric (multipolygon) and identifier (OBJECTID) data, lacking species or health attributes.

Provenance

Source

City of Calgary via data.calgary.ca.

Collection Method

Derived using custom algorithms on City of Calgary RGBN stereo aerial imagery and lidar.

Time Range

Imagery and lidar captured June-July 2024.

Freshness

Data reflects conditions from June-July 2024 and was last updated in the system on March 10, 2026.

Geography

All land within the City of Calgary, Alberta, Canada.