Magdalen Islands Lagoon Water Body Polygons from 2022 Geospatial Data

Five inland water body polygons define the Magdalen Islands Marine Refuge boundaries. Fisheries and Oceans Canada produced this dataset using the August 15, 2022 version of the Quebec maritime Geospatial Database of Coastal Ecosystems. Boundaries were defined according to the upper high tide line, representing the maximum water extent during the highest tides.

Use Cases

• Delineate marine protected area boundaries based on the defined upper high tide line.
• Analyze coastal geomorphology based on the polygonal representation of inland water bodies.
• Integrate with other marine spatial data based on the NAD83 / MTM zone 4 projection.
• Support habitat characterization studies based on the source satellite and airborne imagery from 2019.

Strengths

• Defines boundaries for five specific inland water bodies within the marine refuge.
• Based on the August 15, 2022 version of a dedicated coastal ecosystems geospatial database.
• Source data incorporates satellite and airborne imagery from 2019.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Fisheries and Oceans Canada

Collection Method

Cartographic update produced from the Quebec maritime Geospatial Database of Coastal Ecosystems (GDB), developed from sources including 2019 satellite and airborne images.

Time Range

Source imagery from 2019; database version from August 15, 2022.

Freshness

Last updated 2026-05-05 13:30:54.252838; freshness should be verified.

Geography

Inland water bodies of the Magdalen Islands Lagoons Marine Refuge, Quebec, Canada.