Runoff water retention tanks

Polygons representing runoff water retention basins at a resolution of one meter in order to identify the physical particularities of the territory. Runoff is defined as the flow of rainwater to the surface of the ground that does not evaporate and does not seep into the ground when the capacity to hold water and vegetation is reached. The [Climate Plan 2020-2030] (https://portail-m4s.s3.montreal.ca/pdf/Plan_climat%2020-16-16-VF4_VDM.pdf) aims, among other things, to improve urban planning and regulatory tools. Montréal is committed to updating the climate change vulnerability analysis carried out as part of the 2015-2020 Agglomération de Montréal Climate Change Adaptation Plan and to integrating it into the next urban planning and mobility plan. The map of runoff water retention basins was produced in 2021, with the collaboration of the Department of Geography of the University of Quebec in Montreal, to calculate the vulnerability to heavy rains in the agglomeration of Montreal. The data can also be consulted on the [interactive map of vulnerabilities to climate hazards in the Montreal agglomeration] (https://experience.arcgis.com/experience/944e0b7104bd491591ccca829da24670/page/Page/).This third party metadata element was translated using an automated translation tool (Amazon Translate).

Datasets available for download

• Retention tanks 2021GeoJSON
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• Retention tanks 2021 (simplified polygons)GeoJSON
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• Original metadata (https://www.donneesquebec.ca)HTML
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• Retention tanks 2021SHP
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• Retention tanks 2021 (simplified polygons)SHP
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• BTER
• Climate
• Climate change
• Crue
• Environment
• Form Descriptors
• Government information
• Nature and Environment
• Rain
• Science and Technology

Additional Info

• Maturity Level 1 (54%)
• Maturity Level 2 (38%)
• Maturity Level 3 (0%)
• Maturity Level 4 (0%)
• Maturity Level 5 (0%)
• Maturity Level 6 (0%)

Field	Value
Last Updated	October 20, 2025, 02:35 (UTC)
Created	October 20, 2025, 02:35 (UTC)
Domain / Topic Domain or topic of the dataset being cataloged.	Geoscientific Information
Title Title for the Dataset.	Runoff water retention tanks
Description A description of the dataset.	Polygons representing runoff water retention basins at a resolution of one meter in order to identify the physical particularities of the territory. Runoff is defined as the flow of rainwater to the surface of the ground that does not evaporate and does not seep into the ground when the capacity to hold water and vegetation is reached. The [Climate Plan 2020-2030] (https://portail-m4s.s3.montreal.ca/pdf/Plan_climat%2020-16-16-VF4_VDM.pdf) aims, among other things, to improve urban planning and regulatory tools. Montréal is committed to updating the climate change vulnerability analysis carried out as part of the 2015-2020 Agglomération de Montréal Climate Change Adaptation Plan and to integrating it into the next urban planning and mobility plan. The map of runoff water retention basins was produced in 2021, with the collaboration of the Department of Geography of the University of Quebec in Montreal, to calculate the vulnerability to heavy rains in the agglomeration of Montreal. The data can also be consulted on the [interactive map of vulnerabilities to climate hazards in the Montreal agglomeration] (https://experience.arcgis.com/experience/944e0b7104bd491591ccca829da24670/page/Page/).This third party metadata element was translated using an automated translation tool (Amazon Translate).
Tags / Keywords Keywords/tags categorizing the dataset.	BTER Climate Climate change Crue Environment Form Descriptors Government information Nature and Environment Rain Science and Technology
Format (CSV, XLS, TXT, PDF, etc) File format of the dataset.
Dataset Size Dataset size in megabytes.
Metadata Identifier Metadata identifier – can be used as the unique identifier for catalogue entry
Published Date Published date of the dataset.	2023-09-28
Time Period Data Span (start date) Start date of the data in the dataset.
Time Period Data Span (end date) End date of time data in the dataset.
GeoSpatial Area Data Span A spatial region or named place the dataset covers.

Field	Value
Access category Type of access granted for the dataset (open, closed, service, etc).
License License used to access the dataset.	Creative Commons 4.0 Attribution (CC-BY) licence – Quebec
Limits on use Limits on use of data.
Location Location of the dataset.	https://open.canada.ca/data/en/dataset/f1341a6b-3741-47d8-9dfd-a8e68e0f88b5
Data Service Data service for accessing a dataset.
Owner Owner of the dataset.	Government and Municipalities of Québec | Gouvernement et municipalités du Québec
Contact Point Who to contact regarding access?	Government and Municipalities of Québec; Government and Municipalities of Québec; Ville de Montréal, [email protected]
Contact Point Email The email to contact regarding access?
Publisher Publisher of the dataset.
Publisher Email Email of the publisher.	[email protected]
Author Author of the dataset.
Author Email Email of the author.
Accessed At Date the data and metadata was accessed.

Field	Value
Identifier Unique identifier for the dataset.
Language Language(s) of the dataset
Link to dataset description A URL to an external document describing the dataset.
Persistent Identifier Data is identified by a persistent identifier.
Globally Unique Identifier Data is identified by a persistent and globally unique identifier.
Contains data about individuals Does the data hold data about individuals?
Contains data about identifiable individuals Does the data hold identifiable data about individual?
Contains Indigenous Data Does the data hold data about Indigenous communities?
Portal Type Platform type of the source portal.

Field	Value
Version Version of the datatset	None
Source Source of the dataset.	None
Version notes Version notes about the dataset.
Is version of another dataset Link to dataset that it is a version of.
Other versions Link to datasets that are versions of it.
Provenance Text Provenance Text of the data.
Provenance URL Provenance URL of the data.
Temporal resolution Describes how granular the date/time data in the dataset is.
GeoSpatial resolution in meters Describes how granular (in meters) geospatial data is in the dataset.
GeoSpatial resolution (in regions) Describes how granular (in regions) geospatial data is in the dataset.

Field	Value
Indigenous Community Permission Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
Community Permission Community permission (who gave permission).
The Indigenous communities the dataset is about Indigenous communities from which data is derived.

Field	Value
Number of data rows If tabular dataset, total number of rows.
Number of data columns If tabular dataset, total number of unique columns.
Number of data cells If tabular dataset, total number of cells with data.
Number of data relations If RDF dataset, total number of triples.
Number of entities If RDF dataset, total number of entities.
Number of data properties If RDF dataset, total number of unique properties used by the triples.
Data quality Describes the quality of the data in the dataset.
Metric for data quality A metric used to measure the quality of the data, such as missing values or invalid formats.

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