Montreal Runoff Water Retention Basin Polygons

2021 mapping project identifies physical retention basins for rainwater runoff across Montreal's territory. The dataset, produced in collaboration with the University of Quebec in Montreal's Geography Department, supports vulnerability analysis for heavy rains as part of the city's Climate Plan 2020-2030.

Use Cases

• Calculate vulnerability to heavy rains using the basin polygon geometries for urban planning.
• Integrate basin location data into the interactive map of climate hazards for the Montreal agglomeration.
• Analyze spatial distribution of retention basins to identify gaps in urban stormwater management infrastructure.

Strengths

• Data produced in 2021 for the Climate Plan 2020-2030, providing recent spatial analysis.
• Polygons represent basins at a one-meter resolution, offering detailed geographic specificity.
• Created with academic collaboration from the University of Quebec in Montreal's Geography Department.

Limitations

• Unknown total number of basin polygons or dataset size limits statistical analysis.
• Data scope is limited to the Montreal agglomeration, not applicable to other regions.
• Relies on automated translation for metadata, which may introduce interpretation errors.

Provenance

Source

Government and Municipalities of Québec, via open_canada platform.

Collection Method

Mapping project to identify physical particularities of the territory, likely using GIS analysis.

Time Range

Data reflects 2021 mapping project.

Freshness

Last updated March 2026, indicating active maintenance.

Geography

Agglomeration of Montreal, Québec.