Study of bank mobility issues in the St. Lawrence river section

As part of measure 2.6 of the 2013-2020 Action Plan on Climate Change, and in the wake of the project “[Characterization of the banks of the fluvial part of the St. Lawrence and analysis of the evolution of hydro-climatic factors influencing erosion and flooding hazards] (https://www.donneesquebec.ca/recherche/dataset/caracterisation-des-berges-et-analyse-de-l-evolution-des-facteurs-hydro-climatiques)” ()”, the MELCCFP mandated the team of the **Laboratoire de Géomorphology Terre-Mer du Département de Géomorphology de l'Université Laval ** in order to conduct a study on the mobility issues of banks in the fluvial section of the St. Lawrence. The selection of the six issues, spread over ten sites of interest, was based on the previous shoreline characterization project, which made it possible to locate significant problems related to shoreline mobility.

The six issues addressed correspond to:

1. The archipelagos of the fluvial St. Lawrence and the seaway (sites of Île Marie, Île de Grace and Île des Barques)

2. Land use planning and delta formation in Lake Saint-Pierre (Yamachiche Point site)

3. The degradation of the sloping walls between Sainte-Marthe-du-Cap and Champlain (Pointe-au-Vent and Champlain sites)

4. The rapid dynamics of high soft cliffs (Cap Lévrard site)

5. The effects of docks on sedimentary transit in the fluvial estuary (Portneuf and Pointe-Platon sites)

6. The management of urban beaches in Quebec (site of Plage-Jacques-Cartier, Anse-Tibbits and Beauport Bay beach)

This new study has thus made it possible to provide scientific knowledge adapted to the specificities of this densely populated sector of the river, in order to (1) better understand the hydrogeomorphological trajectory of this large fluvial system, and (2) to guide management practices towards better respect for its mobility space and the integrity of its ecosystems. The development of a multi-scale monitoring approach, combining geomorphological and geohistorical components, has proven to be very effective in documenting the implications of the highly artificial nature of the fluvial St. Lawrence and in better defining the influence of natural processes.

The project was made possible thanks to the creation of a vast geospatial database, collected and processed by the research team. In a process of sharing and disseminating, the team makes available all the deliverables and geospatial data* produced during this study, in particular:

A comprehensive report detailing the context of the study, the methodology, the results in the form of six extensively illustrated Mobility-Trajectory sheets, as well as a summary accompanied by a discussion on the impacts of land use planning along the fluvial St. Lawrence.

Self-supported version of the six Mobility-Trajectory portrait sheets.

Geospatial data associated with the historical mapping of coastline features (CTs) and their migration rates, as well as products derived from drone imagery, such as numerical surface models (MNS) and orthomosaics.

*Higher spatial and temporal resolution data are available upon request.

**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Date ( RI_367 ): 2025-01-15

Date ( RI_366 ): 2025-01-15

RI_418

Government and Municipalities of Québec; Government and Municipalities of Québec; Ministère de l’Environnement, Lutte contre les changements climatiques, Faune et Parcs - Direction de l’Aménagement et des Milieux hydriques ( )

https://www.donneesquebec.ca

Status: proposed; proposé RI_600

Maintenance and update frequency: asNeeded; auBesoin RI_540

Keywords ( RI_528 )

Waterfront development
Cartography
Climate change
St. Lawrence Estuary
St. Lawrence River
Glace
Geomorphology
Anthropogenic environment
Topographic model
Orthomosaic
Natural risk
Coastal resilience
Tempest
Coastline
Erosion

Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )

Government information

Use limitation: Creative Commons 4.0 Attribution (CC-BY) licence – Quebec (https://www.donneesquebec.ca/fr/licence/)

Access constraints: license; licence RI_606

Use constraints: license; licence RI_606

Spatial representation type: grid; grille RI_636

Metadata language: eng; CAN

Metadata language: fra; CAN

Topic category

Geoscientific information

Begin date: 2020-04-01

End date: 2024-04-01

Reference system identifier: unknown / unknown / unknown

Distribution format

ECW ( unknown )
FGDB/GDB ( unknown )
GeoTIF ( unknown )
HTML ( unknown )
PDF ( unknown )

RI_418

https://www.donneesquebec.ca

OnLine resource: Orthomosaic of Île Marie - 20210520 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Orthomosaic of Île Marie - 20230601 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Grace Island Orthomosaic - 20210722 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Grace Island Orthomosaic - 20230531 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Orthomosaic of Île des Barques - 20210722 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Orthomosaic of Île des Barques - 20230531 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Yamachiche Point Orthomosaic - 20210519 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Yamachiche Point Orthomosaic - 20221005 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Orthomosaic of the Champlain walls - 20210504 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Orthomosaic of the Champlain walls - 20230522 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Orthomosaic of Sainte-Marthe-du-Cap - 20210504 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Orthomosaic of Sainte-Marthe-du-Cap - 20230522 ( HTTPS )
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OnLine resource: Orthomosaic of Cap Lévrard - 20200914 ( HTTPS )
Dataset;ECW;fra

OnLine resource: Orthomosaic of Cap Lévrard - 20230529 ( HTTPS )
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OnLine resource: Orthomosaic of the Quai de Portneuf - 20210506 ( HTTPS )
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OnLine resource: Orthomosaic of the Quai de Portneuf - 20220509 ( HTTPS )
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OnLine resource: Orthomosaic of Pointe-Plato - 20210507 ( HTTPS )
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OnLine resource: Orthomosaic of Pointe-Plato - 20220511 ( HTTPS )
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OnLine resource: Orthomosaic of the Jacques-Cartier Beach - 20200713 ( HTTPS )
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OnLine resource: Orthomosaic of the Jacques-Cartier Beach - 20230529 ( HTTPS )
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OnLine resource: Anse-Tibbits Beach Orthomosaic - 20190604 ( HTTPS )
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OnLine resource: Anse-Tibbits Beach Orthomosaic - 20210817 ( HTTPS )
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OnLine resource: Orthomosaic of Anse-Tbbits beach - 20230815 ( HTTPS )
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OnLine resource: Beauport Bay beach orthomosaic - 20211116 ( HTTPS )
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OnLine resource: Beauport Bay beach orthomosaic - 20230612 ( HTTPS )
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OnLine resource: Historical position of coastline and migration rates ( HTTPS )
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OnLine resource: Marie Island MNS - 20210520 ( HTTPS )
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OnLine resource: Marie Island MNS - 20230601 ( HTTPS )
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OnLine resource: Grace Island MNS - 20210722 ( HTTPS )
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OnLine resource: Grace Island MNS - 20230531 ( HTTPS )
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OnLine resource: MNS of Île des Barques - 20210722 ( HTTPS )
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OnLine resource: MNS of Île des Barques - 20230531 ( HTTPS )
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OnLine resource: Yamachiche Point MNS - 20210519 ( HTTPS )
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OnLine resource: Yamachiche Point MNS - 20221005 ( HTTPS )
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OnLine resource: MNS of the Champlain walls - 20210504 ( HTTPS )
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OnLine resource: MNS of the Champlain walls - 20230522 ( HTTPS )
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OnLine resource: MNS of Sainte-Marthe-du-Cap - 20210504 ( HTTPS )
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OnLine resource: MNS of Sainte-Marthe-du-Cap - 20230522 ( HTTPS )
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OnLine resource: MNS of Cap Lévrard - 20200914 ( HTTPS )
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OnLine resource: MNS of Cap Lévrard - 20230529 ( HTTPS )
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OnLine resource: MNS du Quai de Portneuf - 20210516 ( HTTPS )
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OnLine resource: MNS du Quai de Portneuf - 20220509 ( HTTPS )
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OnLine resource: MNS of Pointe-Platon - 20210507 ( HTTPS )
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OnLine resource: MNS of Pointe-Platon - 202205113 ( HTTPS )
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OnLine resource: MNS de la Plage-Jacques-Cartier - 20200713 ( HTTPS )
Dataset;GeoTIF;fra

OnLine resource: MNS de la Plage-Jacques-Cartier - 20230529 ( HTTPS )
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OnLine resource: Anse-Tibbits Beach MNS - 20190604 ( HTTPS )
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OnLine resource: MNS of Anse-Tibbits beach - 20210817 ( HTTPS )
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OnLine resource: MNS of Anse-Tibbits beach - 20230815 ( HTTPS )
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OnLine resource: Beauport Bay Beach MNS - 20211116 ( HTTPS )
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OnLine resource: Beauport Bay Beach MNS - 20230612 ( HTTPS )
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OnLine resource: Original metadata (https://www.donneesquebec.ca) ( HTTPS )
Dataset;HTML;fra

OnLine resource: Study of bank mobility issues in the St. Lawrence river section - Final report ( HTTPS )
Supporting Document;PDF;fra

OnLine resource: Guide for using the Mobility-Trajectory portrait sheets ( HTTPS )
Supporting Document;PDF;fra

OnLine resource: Issue #1: The archipelagos of the fluvial St. Lawrence and the seaway ( HTTPS )
Supporting Document;PDF;fra

OnLine resource: Issue #2: Land use planning and delta formation in Lake Saint-Pierre ( HTTPS )
Supporting Document;PDF;fra

OnLine resource: Issue #3: The degradation of the sloping walls between Sainte-Marthe-du-Cap and Champlain ( HTTPS )
Supporting Document;PDF;fra

OnLine resource: Issue #4: The rapid dynamics of high soft cliffs ( HTTPS )
Supporting Document;PDF;fra

OnLine resource: Issue #5: The effects of docks on sedimentary transit in the fluvial estuary ( HTTPS )
Supporting Document;PDF;fra

OnLine resource: Issue #6: The management of urban beaches in Quebec City ( HTTPS )
Supporting Document;PDF;fra

File identifier: a849ef4f-da7c-4ea6-9a72-a5c3a22179e7 XML

Metadata language: eng; CAN

Character set: utf8; utf8 RI_458

Hierarchy level: dataset; jeuDonnées RI_622

Date stamp: 2025-11-11

Metadata standard name: North American Profile of ISO 19115:2003 - Geographic information - Metadata

Metadata standard version: HNAP ISO:19115 - 2003

RI_418

https://www.donneesquebec.ca

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